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Finding the Fourth Proportional to 18,482.64, 27,695.84 and 13,555.52

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Solution

The fourth proportional to 18,482.64, 27,695.84 and 13,555.52 is: 20,312.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,482.64 : 27,695.84 = 13,555.52 : x
  2. Step 2: Convert to fraction form
    18,482.64/27,695.84 = 13,555.52/x
  3. Step 3: Cross multiply
    18,482.64x = 27,695.84 × 13,555.52
  4. Step 4: Simplify right side
    18,482.64x = 375,431,513.04
  5. Step 5: Solve for x
    x = 375,431,513.04/18,482.64
  6. Step 6: Final answer
    x = 20,312.66

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1.5x scale

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.