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Finding the Fourth Proportional to 18,017.98, 24,851.13 and 15,504.30

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Solution

The fourth proportional to 18,017.98, 24,851.13 and 15,504.30 is: 21,384.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.98 : 24,851.13 = 15,504.30 : x
  2. Step 2: Convert to fraction form
    18,017.98/24,851.13 = 15,504.30/x
  3. Step 3: Cross multiply
    18,017.98x = 24,851.13 × 15,504.30
  4. Step 4: Simplify right side
    18,017.98x = 385,299,316.72
  5. Step 5: Solve for x
    x = 385,299,316.72/18,017.98
  6. Step 6: Final answer
    x = 21,384.16

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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.