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Finding the Fourth Proportional to 13,381.04, 18,473.52 and 8,911.04

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Solution

The fourth proportional to 13,381.04, 18,473.52 and 8,911.04 is: 12,302.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.04 : 18,473.52 = 8,911.04 : x
  2. Step 2: Convert to fraction form
    13,381.04/18,473.52 = 8,911.04/x
  3. Step 3: Cross multiply
    13,381.04x = 18,473.52 × 8,911.04
  4. Step 4: Simplify right side
    13,381.04x = 164,618,275.66
  5. Step 5: Solve for x
    x = 164,618,275.66/13,381.04
  6. Step 6: Final answer
    x = 12,302.35

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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.