Home / 18,312.56-27,470.70-4,985.75

Finding the Fourth Proportional to 18,312.56, 27,470.70 and 4,985.75

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Solution

The fourth proportional to 18,312.56, 27,470.70 and 4,985.75 is: 7,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.56 : 27,470.70 = 4,985.75 : x
  2. Step 2: Convert to fraction form
    18,312.56/27,470.70 = 4,985.75/x
  3. Step 3: Cross multiply
    18,312.56x = 27,470.70 × 4,985.75
  4. Step 4: Simplify right side
    18,312.56x = 136,962,042.53
  5. Step 5: Solve for x
    x = 136,962,042.53/18,312.56
  6. Step 6: Final answer
    x = 7,479.13

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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.