Home / 20,754,418.30-31,131,627.45-13,214,808.70

Finding the Fourth Proportional to 20,754,418.30, 31,131,627.45 and 13,214,808.70

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Solution

The fourth proportional to 20,754,418.30, 31,131,627.45 and 13,214,808.70 is: 19,822,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,418.30 : 31,131,627.45 = 13,214,808.70 : x
  2. Step 2: Convert to fraction form
    20,754,418.30/31,131,627.45 = 13,214,808.70/x
  3. Step 3: Cross multiply
    20,754,418.30x = 31,131,627.45 × 13,214,808.70
  4. Step 4: Simplify right side
    20,754,418.30x = 411,398,501,271,418.81
  5. Step 5: Solve for x
    x = 411,398,501,271,418.81/20,754,418.30
  6. Step 6: Final answer
    x = 19,822,213.05

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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.