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Finding the Fourth Proportional to 18,657.59, 27,967.94 and 7,557.24

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Solution

The fourth proportional to 18,657.59, 27,967.94 and 7,557.24 is: 11,328.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.59 : 27,967.94 = 7,557.24 : x
  2. Step 2: Convert to fraction form
    18,657.59/27,967.94 = 7,557.24/x
  3. Step 3: Cross multiply
    18,657.59x = 27,967.94 × 7,557.24
  4. Step 4: Simplify right side
    18,657.59x = 211,360,397.10
  5. Step 5: Solve for x
    x = 211,360,397.10/18,657.59
  6. Step 6: Final answer
    x = 11,328.39

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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.