Home / 13,397.04-18,490.80-8,360.16

Finding the Fourth Proportional to 13,397.04, 18,490.80 and 8,360.16

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Solution

The fourth proportional to 13,397.04, 18,490.80 and 8,360.16 is: 11,538.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.04 : 18,490.80 = 8,360.16 : x
  2. Step 2: Convert to fraction form
    13,397.04/18,490.80 = 8,360.16/x
  3. Step 3: Cross multiply
    13,397.04x = 18,490.80 × 8,360.16
  4. Step 4: Simplify right side
    13,397.04x = 154,586,046.53
  5. Step 5: Solve for x
    x = 154,586,046.53/13,397.04
  6. Step 6: Final answer
    x = 11,538.82

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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.