Home / 12,478,652.20-18,720,602.70-7,082,885.80

Finding the Fourth Proportional to 12,478,652.20, 18,720,602.70 and 7,082,885.80

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Solution

The fourth proportional to 12,478,652.20, 18,720,602.70 and 7,082,885.80 is: 10,625,818.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,652.20 : 18,720,602.70 = 7,082,885.80 : x
  2. Step 2: Convert to fraction form
    12,478,652.20/18,720,602.70 = 7,082,885.80/x
  3. Step 3: Cross multiply
    12,478,652.20x = 18,720,602.70 × 7,082,885.80
  4. Step 4: Simplify right side
    12,478,652.20x = 132,595,891,031,271.66
  5. Step 5: Solve for x
    x = 132,595,891,031,271.66/12,478,652.20
  6. Step 6: Final answer
    x = 10,625,818.31

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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.