Home / 20,712,190.80-31,068,286.20-12,067,417.20

Finding the Fourth Proportional to 20,712,190.80, 31,068,286.20 and 12,067,417.20

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Solution

The fourth proportional to 20,712,190.80, 31,068,286.20 and 12,067,417.20 is: 18,101,125.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,190.80 : 31,068,286.20 = 12,067,417.20 : x
  2. Step 2: Convert to fraction form
    20,712,190.80/31,068,286.20 = 12,067,417.20/x
  3. Step 3: Cross multiply
    20,712,190.80x = 31,068,286.20 × 12,067,417.20
  4. Step 4: Simplify right side
    20,712,190.80x = 374,913,971,264,402.62
  5. Step 5: Solve for x
    x = 374,913,971,264,402.62/20,712,190.80
  6. Step 6: Final answer
    x = 18,101,125.80

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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.