Home / 20,627.76-28,476.36-12,671.76

Finding the Fourth Proportional to 20,627.76, 28,476.36 and 12,671.76

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Solution

The fourth proportional to 20,627.76, 28,476.36 and 12,671.76 is: 17,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.76 : 28,476.36 = 12,671.76 : x
  2. Step 2: Convert to fraction form
    20,627.76/28,476.36 = 12,671.76/x
  3. Step 3: Cross multiply
    20,627.76x = 28,476.36 × 12,671.76
  4. Step 4: Simplify right side
    20,627.76x = 360,845,599.59
  5. Step 5: Solve for x
    x = 360,845,599.59/20,627.76
  6. Step 6: Final answer
    x = 17,493.20

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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.