Home / 28,495.48-39,323.69-15,920.23

Finding the Fourth Proportional to 28,495.48, 39,323.69 and 15,920.23

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Solution

The fourth proportional to 28,495.48, 39,323.69 and 15,920.23 is: 21,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.48 : 39,323.69 = 15,920.23 : x
  2. Step 2: Convert to fraction form
    28,495.48/39,323.69 = 15,920.23/x
  3. Step 3: Cross multiply
    28,495.48x = 39,323.69 × 15,920.23
  4. Step 4: Simplify right side
    28,495.48x = 626,042,189.25
  5. Step 5: Solve for x
    x = 626,042,189.25/28,495.48
  6. Step 6: Final answer
    x = 21,969.88

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Half scale
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Double scale
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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.