Home / 25,125.98-37,689.78-12,639.19

Finding the Fourth Proportional to 25,125.98, 37,689.78 and 12,639.19

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Solution

The fourth proportional to 25,125.98, 37,689.78 and 12,639.19 is: 18,959.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,125.98 : 37,689.78 = 12,639.19 : x
  2. Step 2: Convert to fraction form
    25,125.98/37,689.78 = 12,639.19/x
  3. Step 3: Cross multiply
    25,125.98x = 37,689.78 × 12,639.19
  4. Step 4: Simplify right side
    25,125.98x = 476,368,290.48
  5. Step 5: Solve for x
    x = 476,368,290.48/25,125.98
  6. Step 6: Final answer
    x = 18,959.19

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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.