Home / 21,328,731.72-29,432,921.94-12,164,326.92

Finding the Fourth Proportional to 21,328,731.72, 29,432,921.94 and 12,164,326.92

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Solution

The fourth proportional to 21,328,731.72, 29,432,921.94 and 12,164,326.92 is: 16,786,356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328,731.72 : 29,432,921.94 = 12,164,326.92 : x
  2. Step 2: Convert to fraction form
    21,328,731.72/29,432,921.94 = 12,164,326.92/x
  3. Step 3: Cross multiply
    21,328,731.72x = 29,432,921.94 × 12,164,326.92
  4. Step 4: Simplify right side
    21,328,731.72x = 358,031,684,689,000.62
  5. Step 5: Solve for x
    x = 358,031,684,689,000.62/21,328,731.72
  6. Step 6: Final answer
    x = 16,786,356.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.