Home / 51,387.18-77,085.90-13,947.86

Finding the Fourth Proportional to 51,387.18, 77,085.90 and 13,947.86

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Solution

The fourth proportional to 51,387.18, 77,085.90 and 13,947.86 is: 20,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,387.18 : 77,085.90 = 13,947.86 : x
  2. Step 2: Convert to fraction form
    51,387.18/77,085.90 = 13,947.86/x
  3. Step 3: Cross multiply
    51,387.18x = 77,085.90 × 13,947.86
  4. Step 4: Simplify right side
    51,387.18x = 1,075,182,955.74
  5. Step 5: Solve for x
    x = 1,075,182,955.74/51,387.18
  6. Step 6: Final answer
    x = 20,923.17

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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.