Home / 15,115.28-20,857.56-9,448.88

Finding the Fourth Proportional to 15,115.28, 20,857.56 and 9,448.88

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Solution

The fourth proportional to 15,115.28, 20,857.56 and 9,448.88 is: 13,038.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.28 : 20,857.56 = 9,448.88 : x
  2. Step 2: Convert to fraction form
    15,115.28/20,857.56 = 9,448.88/x
  3. Step 3: Cross multiply
    15,115.28x = 20,857.56 × 9,448.88
  4. Step 4: Simplify right side
    15,115.28x = 197,080,581.53
  5. Step 5: Solve for x
    x = 197,080,581.53/15,115.28
  6. Step 6: Final answer
    x = 13,038.50

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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.