Home / 25,510.58-38,260.40-7,978.13

Finding the Fourth Proportional to 25,510.58, 38,260.40 and 7,978.13

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Solution

The fourth proportional to 25,510.58, 38,260.40 and 7,978.13 is: 11,965.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,510.58 : 38,260.40 = 7,978.13 : x
  2. Step 2: Convert to fraction form
    25,510.58/38,260.40 = 7,978.13/x
  3. Step 3: Cross multiply
    25,510.58x = 38,260.40 × 7,978.13
  4. Step 4: Simplify right side
    25,510.58x = 305,246,213.86
  5. Step 5: Solve for x
    x = 305,246,213.86/25,510.58
  6. Step 6: Final answer
    x = 11,965.48

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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.