Home / 15,627.08-21,569-9,579.16

Finding the Fourth Proportional to 15,627.08, 21,569 and 9,579.16

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Solution

The fourth proportional to 15,627.08, 21,569 and 9,579.16 is: 13,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.08 : 21,569 = 9,579.16 : x
  2. Step 2: Convert to fraction form
    15,627.08/21,569 = 9,579.16/x
  3. Step 3: Cross multiply
    15,627.08x = 21,569 × 9,579.16
  4. Step 4: Simplify right side
    15,627.08x = 206,612,902.04
  5. Step 5: Solve for x
    x = 206,612,902.04/15,627.08
  6. Step 6: Final answer
    x = 13,221.47

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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.