Home / 51,387.83-77,081.78-13,947.91

Finding the Fourth Proportional to 51,387.83, 77,081.78 and 13,947.91

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Solution

The fourth proportional to 51,387.83, 77,081.78 and 13,947.91 is: 20,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,387.83 : 77,081.78 = 13,947.91 : x
  2. Step 2: Convert to fraction form
    51,387.83/77,081.78 = 13,947.91/x
  3. Step 3: Cross multiply
    51,387.83x = 77,081.78 × 13,947.91
  4. Step 4: Simplify right side
    51,387.83x = 1,075,129,730.08
  5. Step 5: Solve for x
    x = 1,075,129,730.08/51,387.83
  6. Step 6: Final answer
    x = 20,921.87

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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.