Home / 20,710.50-31,052.79-13,681.86

Finding the Fourth Proportional to 20,710.50, 31,052.79 and 13,681.86

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Solution

The fourth proportional to 20,710.50, 31,052.79 and 13,681.86 is: 20,514.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.50 : 31,052.79 = 13,681.86 : x
  2. Step 2: Convert to fraction form
    20,710.50/31,052.79 = 13,681.86/x
  3. Step 3: Cross multiply
    20,710.50x = 31,052.79 × 13,681.86
  4. Step 4: Simplify right side
    20,710.50x = 424,859,925.39
  5. Step 5: Solve for x
    x = 424,859,925.39/20,710.50
  6. Step 6: Final answer
    x = 20,514.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.