Home / 21,000,999.70-31,501,499.55-16,749,471.70

Finding the Fourth Proportional to 21,000,999.70, 31,501,499.55 and 16,749,471.70

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Solution

The fourth proportional to 21,000,999.70, 31,501,499.55 and 16,749,471.70 is: 25,124,207.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,999.70 : 31,501,499.55 = 16,749,471.70 : x
  2. Step 2: Convert to fraction form
    21,000,999.70/31,501,499.55 = 16,749,471.70/x
  3. Step 3: Cross multiply
    21,000,999.70x = 31,501,499.55 × 16,749,471.70
  4. Step 4: Simplify right side
    21,000,999.70x = 527,633,475,220,287.75
  5. Step 5: Solve for x
    x = 527,633,475,220,287.75/21,000,999.70
  6. Step 6: Final answer
    x = 25,124,207.55

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Similar ratio
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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.