Home / 20,753,365.20-31,130,047.80-11,187,427.20

Finding the Fourth Proportional to 20,753,365.20, 31,130,047.80 and 11,187,427.20

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Solution

The fourth proportional to 20,753,365.20, 31,130,047.80 and 11,187,427.20 is: 16,781,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753,365.20 : 31,130,047.80 = 11,187,427.20 : x
  2. Step 2: Convert to fraction form
    20,753,365.20/31,130,047.80 = 11,187,427.20/x
  3. Step 3: Cross multiply
    20,753,365.20x = 31,130,047.80 × 11,187,427.20
  4. Step 4: Simplify right side
    20,753,365.20x = 348,265,143,495,020.12
  5. Step 5: Solve for x
    x = 348,265,143,495,020.12/20,753,365.20
  6. Step 6: Final answer
    x = 16,781,140.80

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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.