Home / 21,008.92-31,510.14-9,320.08

Finding the Fourth Proportional to 21,008.92, 31,510.14 and 9,320.08

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Solution

The fourth proportional to 21,008.92, 31,510.14 and 9,320.08 is: 13,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.92 : 31,510.14 = 9,320.08 : x
  2. Step 2: Convert to fraction form
    21,008.92/31,510.14 = 9,320.08/x
  3. Step 3: Cross multiply
    21,008.92x = 31,510.14 × 9,320.08
  4. Step 4: Simplify right side
    21,008.92x = 293,677,025.61
  5. Step 5: Solve for x
    x = 293,677,025.61/21,008.92
  6. Step 6: Final answer
    x = 13,978.68

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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.