Home / 20,921,149.10-31,381,723.65-7,453,117.10

Finding the Fourth Proportional to 20,921,149.10, 31,381,723.65 and 7,453,117.10

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Solution

The fourth proportional to 20,921,149.10, 31,381,723.65 and 7,453,117.10 is: 11,179,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,921,149.10 : 31,381,723.65 = 7,453,117.10 : x
  2. Step 2: Convert to fraction form
    20,921,149.10/31,381,723.65 = 7,453,117.10/x
  3. Step 3: Cross multiply
    20,921,149.10x = 31,381,723.65 × 7,453,117.10
  4. Step 4: Simplify right side
    20,921,149.10x = 233,891,661,163,289.41
  5. Step 5: Solve for x
    x = 233,891,661,163,289.41/20,921,149.10
  6. Step 6: Final answer
    x = 11,179,675.65

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Double scale
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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.