Home / 25,521.45-35,221.57-15,312.87

Finding the Fourth Proportional to 25,521.45, 35,221.57 and 15,312.87

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Solution

The fourth proportional to 25,521.45, 35,221.57 and 15,312.87 is: 21,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,521.45 : 35,221.57 = 15,312.87 : x
  2. Step 2: Convert to fraction form
    25,521.45/35,221.57 = 15,312.87/x
  3. Step 3: Cross multiply
    25,521.45x = 35,221.57 × 15,312.87
  4. Step 4: Simplify right side
    25,521.45x = 539,343,322.61
  5. Step 5: Solve for x
    x = 539,343,322.61/25,521.45
  6. Step 6: Final answer
    x = 21,132.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.