Home / 22,639.80-31,239-14,140.38

Finding the Fourth Proportional to 22,639.80, 31,239 and 14,140.38

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Solution

The fourth proportional to 22,639.80, 31,239 and 14,140.38 is: 19,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,639.80 : 31,239 = 14,140.38 : x
  2. Step 2: Convert to fraction form
    22,639.80/31,239 = 14,140.38/x
  3. Step 3: Cross multiply
    22,639.80x = 31,239 × 14,140.38
  4. Step 4: Simplify right side
    22,639.80x = 441,731,330.82
  5. Step 5: Solve for x
    x = 441,731,330.82/22,639.80
  6. Step 6: Final answer
    x = 19,511.27

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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.