Home / 13,490.16-18,623.16-12,766.56

Finding the Fourth Proportional to 13,490.16, 18,623.16 and 12,766.56

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Solution

The fourth proportional to 13,490.16, 18,623.16 and 12,766.56 is: 17,624.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.16 : 18,623.16 = 12,766.56 : x
  2. Step 2: Convert to fraction form
    13,490.16/18,623.16 = 12,766.56/x
  3. Step 3: Cross multiply
    13,490.16x = 18,623.16 × 12,766.56
  4. Step 4: Simplify right side
    13,490.16x = 237,753,689.53
  5. Step 5: Solve for x
    x = 237,753,689.53/13,490.16
  6. Step 6: Final answer
    x = 17,624.23

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1.5x scale

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.