Home / 20,790,019.60-31,185,029.40-8,655,450.10

Finding the Fourth Proportional to 20,790,019.60, 31,185,029.40 and 8,655,450.10

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Solution

The fourth proportional to 20,790,019.60, 31,185,029.40 and 8,655,450.10 is: 12,983,175.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,019.60 : 31,185,029.40 = 8,655,450.10 : x
  2. Step 2: Convert to fraction form
    20,790,019.60/31,185,029.40 = 8,655,450.10/x
  3. Step 3: Cross multiply
    20,790,019.60x = 31,185,029.40 × 8,655,450.10
  4. Step 4: Simplify right side
    20,790,019.60x = 269,920,465,838,732.91
  5. Step 5: Solve for x
    x = 269,920,465,838,732.91/20,790,019.60
  6. Step 6: Final answer
    x = 12,983,175.15

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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.