Home / 28,510.47-39,323.48-20,954.25

Finding the Fourth Proportional to 28,510.47, 39,323.48 and 20,954.25

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Solution

The fourth proportional to 28,510.47, 39,323.48 and 20,954.25 is: 28,901.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.47 : 39,323.48 = 20,954.25 : x
  2. Step 2: Convert to fraction form
    28,510.47/39,323.48 = 20,954.25/x
  3. Step 3: Cross multiply
    28,510.47x = 39,323.48 × 20,954.25
  4. Step 4: Simplify right side
    28,510.47x = 823,993,926.02
  5. Step 5: Solve for x
    x = 823,993,926.02/28,510.47
  6. Step 6: Final answer
    x = 28,901.45

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Half scale
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Double scale
Find fourth proportional to 28,511.47, 39,324.85 and 20,955.25
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.