Home / 21,332.16-31,998.24-7,477.92

Finding the Fourth Proportional to 21,332.16, 31,998.24 and 7,477.92

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Solution

The fourth proportional to 21,332.16, 31,998.24 and 7,477.92 is: 11,216.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.16 : 31,998.24 = 7,477.92 : x
  2. Step 2: Convert to fraction form
    21,332.16/31,998.24 = 7,477.92/x
  3. Step 3: Cross multiply
    21,332.16x = 31,998.24 × 7,477.92
  4. Step 4: Simplify right side
    21,332.16x = 239,280,278.86
  5. Step 5: Solve for x
    x = 239,280,278.86/21,332.16
  6. Step 6: Final answer
    x = 11,216.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.