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Finding the Fourth Proportional to 18,479.49, 27,720.18 and 9,000.53

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Solution

The fourth proportional to 18,479.49, 27,720.18 and 9,000.53 is: 13,501.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.49 : 27,720.18 = 9,000.53 : x
  2. Step 2: Convert to fraction form
    18,479.49/27,720.18 = 9,000.53/x
  3. Step 3: Cross multiply
    18,479.49x = 27,720.18 × 9,000.53
  4. Step 4: Simplify right side
    18,479.49x = 249,496,173.09
  5. Step 5: Solve for x
    x = 249,496,173.09/18,479.49
  6. Step 6: Final answer
    x = 13,501.25

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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.