Home / 21,864.90-30,162.87-14,307.87

Finding the Fourth Proportional to 21,864.90, 30,162.87 and 14,307.87

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Solution

The fourth proportional to 21,864.90, 30,162.87 and 14,307.87 is: 19,737.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.90 : 30,162.87 = 14,307.87 : x
  2. Step 2: Convert to fraction form
    21,864.90/30,162.87 = 14,307.87/x
  3. Step 3: Cross multiply
    21,864.90x = 30,162.87 × 14,307.87
  4. Step 4: Simplify right side
    21,864.90x = 431,566,422.79
  5. Step 5: Solve for x
    x = 431,566,422.79/21,864.90
  6. Step 6: Final answer
    x = 19,737.86

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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.