Home / 12,905,031.80-19,368,045.30-12,485,127.80

Finding the Fourth Proportional to 12,905,031.80, 19,368,045.30 and 12,485,127.80

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Solution

The fourth proportional to 12,905,031.80, 19,368,045.30 and 12,485,127.80 is: 18,737,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905,031.80 : 19,368,045.30 = 12,485,127.80 : x
  2. Step 2: Convert to fraction form
    12,905,031.80/19,368,045.30 = 12,485,127.80/x
  3. Step 3: Cross multiply
    12,905,031.80x = 19,368,045.30 × 12,485,127.80
  4. Step 4: Simplify right side
    12,905,031.80x = 241,812,520,806,689.38
  5. Step 5: Solve for x
    x = 241,812,520,806,689.38/12,905,031.80
  6. Step 6: Final answer
    x = 18,737,847.73

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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.