Home / 28,352.28-39,139.56-18,927.12

Finding the Fourth Proportional to 28,352.28, 39,139.56 and 18,927.12

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Solution

The fourth proportional to 28,352.28, 39,139.56 and 18,927.12 is: 26,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.28 : 39,139.56 = 18,927.12 : x
  2. Step 2: Convert to fraction form
    28,352.28/39,139.56 = 18,927.12/x
  3. Step 3: Cross multiply
    28,352.28x = 39,139.56 × 18,927.12
  4. Step 4: Simplify right side
    28,352.28x = 740,799,148.87
  5. Step 5: Solve for x
    x = 740,799,148.87/28,352.28
  6. Step 6: Final answer
    x = 26,128.38

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Half scale
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Double scale
Find fourth proportional to 28,353.28, 39,140.94 and 18,928.12
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.