Home / 15,929.12-21,987.12-9,560.32

Finding the Fourth Proportional to 15,929.12, 21,987.12 and 9,560.32

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Solution

The fourth proportional to 15,929.12, 21,987.12 and 9,560.32 is: 13,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.12 : 21,987.12 = 9,560.32 : x
  2. Step 2: Convert to fraction form
    15,929.12/21,987.12 = 9,560.32/x
  3. Step 3: Cross multiply
    15,929.12x = 21,987.12 × 9,560.32
  4. Step 4: Simplify right side
    15,929.12x = 210,203,903.08
  5. Step 5: Solve for x
    x = 210,203,903.08/15,929.12
  6. Step 6: Final answer
    x = 13,196.20

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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.