Home / 20,754,667.80-31,132,001.70-13,215,058.20

Finding the Fourth Proportional to 20,754,667.80, 31,132,001.70 and 13,215,058.20

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Solution

The fourth proportional to 20,754,667.80, 31,132,001.70 and 13,215,058.20 is: 19,822,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,667.80 : 31,132,001.70 = 13,215,058.20 : x
  2. Step 2: Convert to fraction form
    20,754,667.80/31,132,001.70 = 13,215,058.20/x
  3. Step 3: Cross multiply
    20,754,667.80x = 31,132,001.70 × 13,215,058.20
  4. Step 4: Simplify right side
    20,754,667.80x = 411,411,214,347,998.94
  5. Step 5: Solve for x
    x = 411,411,214,347,998.94/20,754,667.80
  6. Step 6: Final answer
    x = 19,822,587.30

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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.