Home / 25,451.76-35,123.44-15,515.76

Finding the Fourth Proportional to 25,451.76, 35,123.44 and 15,515.76

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Solution

The fourth proportional to 25,451.76, 35,123.44 and 15,515.76 is: 21,411.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,451.76 : 35,123.44 = 15,515.76 : x
  2. Step 2: Convert to fraction form
    25,451.76/35,123.44 = 15,515.76/x
  3. Step 3: Cross multiply
    25,451.76x = 35,123.44 × 15,515.76
  4. Step 4: Simplify right side
    25,451.76x = 544,966,865.41
  5. Step 5: Solve for x
    x = 544,966,865.41/25,451.76
  6. Step 6: Final answer
    x = 21,411.76

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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.