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Finding the Fourth Proportional to 25,252.80, 37,879.20 and 18,254.40

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Solution

The fourth proportional to 25,252.80, 37,879.20 and 18,254.40 is: 27,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,252.80 : 37,879.20 = 18,254.40 : x
  2. Step 2: Convert to fraction form
    25,252.80/37,879.20 = 18,254.40/x
  3. Step 3: Cross multiply
    25,252.80x = 37,879.20 × 18,254.40
  4. Step 4: Simplify right side
    25,252.80x = 691,462,068.48
  5. Step 5: Solve for x
    x = 691,462,068.48/25,252.80
  6. Step 6: Final answer
    x = 27,381.60

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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.