Home / 20,746,165.80-31,119,248.70-18,691,260.60

Finding the Fourth Proportional to 20,746,165.80, 31,119,248.70 and 18,691,260.60

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Solution

The fourth proportional to 20,746,165.80, 31,119,248.70 and 18,691,260.60 is: 28,036,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746,165.80 : 31,119,248.70 = 18,691,260.60 : x
  2. Step 2: Convert to fraction form
    20,746,165.80/31,119,248.70 = 18,691,260.60/x
  3. Step 3: Cross multiply
    20,746,165.80x = 31,119,248.70 × 18,691,260.60
  4. Step 4: Simplify right side
    20,746,165.80x = 581,657,987,127,911.25
  5. Step 5: Solve for x
    x = 581,657,987,127,911.25/20,746,165.80
  6. Step 6: Final answer
    x = 28,036,890.90

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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.