Home / 20,601.78-28,429.95-12,532.44

Finding the Fourth Proportional to 20,601.78, 28,429.95 and 12,532.44

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Solution

The fourth proportional to 20,601.78, 28,429.95 and 12,532.44 is: 17,294.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.78 : 28,429.95 = 12,532.44 : x
  2. Step 2: Convert to fraction form
    20,601.78/28,429.95 = 12,532.44/x
  3. Step 3: Cross multiply
    20,601.78x = 28,429.95 × 12,532.44
  4. Step 4: Simplify right side
    20,601.78x = 356,296,642.58
  5. Step 5: Solve for x
    x = 356,296,642.58/20,601.78
  6. Step 6: Final answer
    x = 17,294.46

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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.