Home / 15,607.20-21,542.16-9,322.40

Finding the Fourth Proportional to 15,607.20, 21,542.16 and 9,322.40

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Solution

The fourth proportional to 15,607.20, 21,542.16 and 9,322.40 is: 12,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.20 : 21,542.16 = 9,322.40 : x
  2. Step 2: Convert to fraction form
    15,607.20/21,542.16 = 9,322.40/x
  3. Step 3: Cross multiply
    15,607.20x = 21,542.16 × 9,322.40
  4. Step 4: Simplify right side
    15,607.20x = 200,824,632.38
  5. Step 5: Solve for x
    x = 200,824,632.38/15,607.20
  6. Step 6: Final answer
    x = 12,867.44

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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.