Home / 22,639.85-31,241.49-12,567.79

Finding the Fourth Proportional to 22,639.85, 31,241.49 and 12,567.79

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Solution

The fourth proportional to 22,639.85, 31,241.49 and 12,567.79 is: 17,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,639.85 : 31,241.49 = 12,567.79 : x
  2. Step 2: Convert to fraction form
    22,639.85/31,241.49 = 12,567.79/x
  3. Step 3: Cross multiply
    22,639.85x = 31,241.49 × 12,567.79
  4. Step 4: Simplify right side
    22,639.85x = 392,636,485.61
  5. Step 5: Solve for x
    x = 392,636,485.61/22,639.85
  6. Step 6: Final answer
    x = 17,342.72

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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.