Home / 20,369.63-28,123.74-12,724.52

Finding the Fourth Proportional to 20,369.63, 28,123.74 and 12,724.52

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Solution

The fourth proportional to 20,369.63, 28,123.74 and 12,724.52 is: 17,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.63 : 28,123.74 = 12,724.52 : x
  2. Step 2: Convert to fraction form
    20,369.63/28,123.74 = 12,724.52/x
  3. Step 3: Cross multiply
    20,369.63x = 28,123.74 × 12,724.52
  4. Step 4: Simplify right side
    20,369.63x = 357,860,951.49
  5. Step 5: Solve for x
    x = 357,860,951.49/20,369.63
  6. Step 6: Final answer
    x = 17,568.36

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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.