Home / 22,938.38-31,658.51-12,870.89

Finding the Fourth Proportional to 22,938.38, 31,658.51 and 12,870.89

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Solution

The fourth proportional to 22,938.38, 31,658.51 and 12,870.89 is: 17,763.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,938.38 : 31,658.51 = 12,870.89 : x
  2. Step 2: Convert to fraction form
    22,938.38/31,658.51 = 12,870.89/x
  3. Step 3: Cross multiply
    22,938.38x = 31,658.51 × 12,870.89
  4. Step 4: Simplify right side
    22,938.38x = 407,473,199.77
  5. Step 5: Solve for x
    x = 407,473,199.77/22,938.38
  6. Step 6: Final answer
    x = 17,763.82

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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.