Home / 20,968,041.60-31,452,062.40-12,443,990.40

Finding the Fourth Proportional to 20,968,041.60, 31,452,062.40 and 12,443,990.40

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Solution

The fourth proportional to 20,968,041.60, 31,452,062.40 and 12,443,990.40 is: 18,665,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968,041.60 : 31,452,062.40 = 12,443,990.40 : x
  2. Step 2: Convert to fraction form
    20,968,041.60/31,452,062.40 = 12,443,990.40/x
  3. Step 3: Cross multiply
    20,968,041.60x = 31,452,062.40 × 12,443,990.40
  4. Step 4: Simplify right side
    20,968,041.60x = 391,389,162,565,800.94
  5. Step 5: Solve for x
    x = 391,389,162,565,800.94/20,968,041.60
  6. Step 6: Final answer
    x = 18,665,985.60

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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.