Home / 20,790,031.60-31,185,047.40-8,655,462.10

Finding the Fourth Proportional to 20,790,031.60, 31,185,047.40 and 8,655,462.10

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Solution

The fourth proportional to 20,790,031.60, 31,185,047.40 and 8,655,462.10 is: 12,983,193.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,031.60 : 31,185,047.40 = 8,655,462.10 : x
  2. Step 2: Convert to fraction form
    20,790,031.60/31,185,047.40 = 8,655,462.10/x
  3. Step 3: Cross multiply
    20,790,031.60x = 31,185,047.40 × 8,655,462.10
  4. Step 4: Simplify right side
    20,790,031.60x = 269,920,995,857,403.50
  5. Step 5: Solve for x
    x = 269,920,995,857,403.50/20,790,031.60
  6. Step 6: Final answer
    x = 12,983,193.15

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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.