Home / 28,011,450-38,687,687.47-18,828,149.52

Finding the Fourth Proportional to 28,011,450, 38,687,687.47 and 18,828,149.52

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Solution

The fourth proportional to 28,011,450, 38,687,687.47 and 18,828,149.52 is: 26,004,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,450 : 38,687,687.47 = 18,828,149.52 : x
  2. Step 2: Convert to fraction form
    28,011,450/38,687,687.47 = 18,828,149.52/x
  3. Step 3: Cross multiply
    28,011,450x = 38,687,687.47 × 18,828,149.52
  4. Step 4: Simplify right side
    28,011,450x = 728,417,564,268,190.50
  5. Step 5: Solve for x
    x = 728,417,564,268,190.50/28,011,450
  6. Step 6: Final answer
    x = 26,004,279.12

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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.