Home / 20,790,020.60-31,185,030.90-8,655,451.10

Finding the Fourth Proportional to 20,790,020.60, 31,185,030.90 and 8,655,451.10

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Solution

The fourth proportional to 20,790,020.60, 31,185,030.90 and 8,655,451.10 is: 12,983,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,020.60 : 31,185,030.90 = 8,655,451.10 : x
  2. Step 2: Convert to fraction form
    20,790,020.60/31,185,030.90 = 8,655,451.10/x
  3. Step 3: Cross multiply
    20,790,020.60x = 31,185,030.90 × 8,655,451.10
  4. Step 4: Simplify right side
    20,790,020.60x = 269,920,510,006,938.97
  5. Step 5: Solve for x
    x = 269,920,510,006,938.97/20,790,020.60
  6. Step 6: Final answer
    x = 12,983,176.65

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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.