Home / 15,987.60-22,017.29-15,644.16

Finding the Fourth Proportional to 15,987.60, 22,017.29 and 15,644.16

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Solution

The fourth proportional to 15,987.60, 22,017.29 and 15,644.16 is: 21,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.60 : 22,017.29 = 15,644.16 : x
  2. Step 2: Convert to fraction form
    15,987.60/22,017.29 = 15,644.16/x
  3. Step 3: Cross multiply
    15,987.60x = 22,017.29 × 15,644.16
  4. Step 4: Simplify right side
    15,987.60x = 344,441,929.31
  5. Step 5: Solve for x
    x = 344,441,929.31/15,987.60
  6. Step 6: Final answer
    x = 21,544.32

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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.