Home / 20,754,668.30-31,132,002.45-13,215,058.70

Finding the Fourth Proportional to 20,754,668.30, 31,132,002.45 and 13,215,058.70

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Solution

The fourth proportional to 20,754,668.30, 31,132,002.45 and 13,215,058.70 is: 19,822,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,668.30 : 31,132,002.45 = 13,215,058.70 : x
  2. Step 2: Convert to fraction form
    20,754,668.30/31,132,002.45 = 13,215,058.70/x
  3. Step 3: Cross multiply
    20,754,668.30x = 31,132,002.45 × 13,215,058.70
  4. Step 4: Simplify right side
    20,754,668.30x = 411,411,239,825,293.81
  5. Step 5: Solve for x
    x = 411,411,239,825,293.81/20,754,668.30
  6. Step 6: Final answer
    x = 19,822,588.05

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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.