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Finding the Fourth Proportional to 18,053.60, 27,080.40 and 12,148.70

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Solution

The fourth proportional to 18,053.60, 27,080.40 and 12,148.70 is: 18,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,053.60 : 27,080.40 = 12,148.70 : x
  2. Step 2: Convert to fraction form
    18,053.60/27,080.40 = 12,148.70/x
  3. Step 3: Cross multiply
    18,053.60x = 27,080.40 × 12,148.70
  4. Step 4: Simplify right side
    18,053.60x = 328,991,655.48
  5. Step 5: Solve for x
    x = 328,991,655.48/18,053.60
  6. Step 6: Final answer
    x = 18,223.05

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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.