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Finding the Fourth Proportional to 18,017.61, 27,019.53 and 8,655.03

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Solution

The fourth proportional to 18,017.61, 27,019.53 and 8,655.03 is: 12,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.61 : 27,019.53 = 8,655.03 : x
  2. Step 2: Convert to fraction form
    18,017.61/27,019.53 = 8,655.03/x
  3. Step 3: Cross multiply
    18,017.61x = 27,019.53 × 8,655.03
  4. Step 4: Simplify right side
    18,017.61x = 233,854,842.74
  5. Step 5: Solve for x
    x = 233,854,842.74/18,017.61
  6. Step 6: Final answer
    x = 12,979.24

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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.