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Finding the Fourth Proportional to 13,317.81, 18,375.08 and 9,061.32

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Solution

The fourth proportional to 13,317.81, 18,375.08 and 9,061.32 is: 12,502.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.81 : 18,375.08 = 9,061.32 : x
  2. Step 2: Convert to fraction form
    13,317.81/18,375.08 = 9,061.32/x
  3. Step 3: Cross multiply
    13,317.81x = 18,375.08 × 9,061.32
  4. Step 4: Simplify right side
    13,317.81x = 166,502,479.91
  5. Step 5: Solve for x
    x = 166,502,479.91/13,317.81
  6. Step 6: Final answer
    x = 12,502.24

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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.