Home / 21,084.90-29,121.08-14,358.86

Finding the Fourth Proportional to 21,084.90, 29,121.08 and 14,358.86

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Solution

The fourth proportional to 21,084.90, 29,121.08 and 14,358.86 is: 19,831.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.90 : 29,121.08 = 14,358.86 : x
  2. Step 2: Convert to fraction form
    21,084.90/29,121.08 = 14,358.86/x
  3. Step 3: Cross multiply
    21,084.90x = 29,121.08 × 14,358.86
  4. Step 4: Simplify right side
    21,084.90x = 418,145,510.77
  5. Step 5: Solve for x
    x = 418,145,510.77/21,084.90
  6. Step 6: Final answer
    x = 19,831.52

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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.