Home / 28,011,449.50-38,687,686.78-18,828,149.02

Finding the Fourth Proportional to 28,011,449.50, 38,687,686.78 and 18,828,149.02

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Solution

The fourth proportional to 28,011,449.50, 38,687,686.78 and 18,828,149.02 is: 26,004,278.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,449.50 : 38,687,686.78 = 18,828,149.02 : x
  2. Step 2: Convert to fraction form
    28,011,449.50/38,687,686.78 = 18,828,149.02/x
  3. Step 3: Cross multiply
    28,011,449.50x = 38,687,686.78 × 18,828,149.02
  4. Step 4: Simplify right side
    28,011,449.50x = 728,417,531,932,924
  5. Step 5: Solve for x
    x = 728,417,531,932,924/28,011,449.50
  6. Step 6: Final answer
    x = 26,004,278.43

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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.