Home / 18,470.34-27,718.47-14,319.90

Finding the Fourth Proportional to 18,470.34, 27,718.47 and 14,319.90

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Solution

The fourth proportional to 18,470.34, 27,718.47 and 14,319.90 is: 21,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.34 : 27,718.47 = 14,319.90 : x
  2. Step 2: Convert to fraction form
    18,470.34/27,718.47 = 14,319.90/x
  3. Step 3: Cross multiply
    18,470.34x = 27,718.47 × 14,319.90
  4. Step 4: Simplify right side
    18,470.34x = 396,925,718.55
  5. Step 5: Solve for x
    x = 396,925,718.55/18,470.34
  6. Step 6: Final answer
    x = 21,489.90

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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.