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Finding the Fourth Proportional to 18,482.56, 25,510.47 and 15,493.66

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Solution

The fourth proportional to 18,482.56, 25,510.47 and 15,493.66 is: 21,385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,482.56 : 25,510.47 = 15,493.66 : x
  2. Step 2: Convert to fraction form
    18,482.56/25,510.47 = 15,493.66/x
  3. Step 3: Cross multiply
    18,482.56x = 25,510.47 × 15,493.66
  4. Step 4: Simplify right side
    18,482.56x = 395,250,548.62
  5. Step 5: Solve for x
    x = 395,250,548.62/18,482.56
  6. Step 6: Final answer
    x = 21,385.05

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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.