Home / 12,219,712.20-18,340,065.90-5,406,769.80

Finding the Fourth Proportional to 12,219,712.20, 18,340,065.90 and 5,406,769.80

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Solution

The fourth proportional to 12,219,712.20, 18,340,065.90 and 5,406,769.80 is: 8,114,799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219,712.20 : 18,340,065.90 = 5,406,769.80 : x
  2. Step 2: Convert to fraction form
    12,219,712.20/18,340,065.90 = 5,406,769.80/x
  3. Step 3: Cross multiply
    12,219,712.20x = 18,340,065.90 × 5,406,769.80
  4. Step 4: Simplify right side
    12,219,712.20x = 99,160,514,438,129.81
  5. Step 5: Solve for x
    x = 99,160,514,438,129.81/12,219,712.20
  6. Step 6: Final answer
    x = 8,114,799.50

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1.5x scale

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.