Home / 21,096,053.80-31,644,080.70-13,789,724.20

Finding the Fourth Proportional to 21,096,053.80, 31,644,080.70 and 13,789,724.20

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Solution

The fourth proportional to 21,096,053.80, 31,644,080.70 and 13,789,724.20 is: 20,684,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,096,053.80 : 31,644,080.70 = 13,789,724.20 : x
  2. Step 2: Convert to fraction form
    21,096,053.80/31,644,080.70 = 13,789,724.20/x
  3. Step 3: Cross multiply
    21,096,053.80x = 31,644,080.70 × 13,789,724.20
  4. Step 4: Simplify right side
    21,096,053.80x = 436,363,145,415,542.88
  5. Step 5: Solve for x
    x = 436,363,145,415,542.88/21,096,053.80
  6. Step 6: Final answer
    x = 20,684,586.30

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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.