Home / 25,490.57-38,239.74-13,003.78

Finding the Fourth Proportional to 25,490.57, 38,239.74 and 13,003.78

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Solution

The fourth proportional to 25,490.57, 38,239.74 and 13,003.78 is: 19,507.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,490.57 : 38,239.74 = 13,003.78 : x
  2. Step 2: Convert to fraction form
    25,490.57/38,239.74 = 13,003.78/x
  3. Step 3: Cross multiply
    25,490.57x = 38,239.74 × 13,003.78
  4. Step 4: Simplify right side
    25,490.57x = 497,261,376.25
  5. Step 5: Solve for x
    x = 497,261,376.25/25,490.57
  6. Step 6: Final answer
    x = 19,507.66

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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.