Home / 20,364.50-28,101.51-12,409.29

Finding the Fourth Proportional to 20,364.50, 28,101.51 and 12,409.29

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Solution

The fourth proportional to 20,364.50, 28,101.51 and 12,409.29 is: 17,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.50 : 28,101.51 = 12,409.29 : x
  2. Step 2: Convert to fraction form
    20,364.50/28,101.51 = 12,409.29/x
  3. Step 3: Cross multiply
    20,364.50x = 28,101.51 × 12,409.29
  4. Step 4: Simplify right side
    20,364.50x = 348,719,787.03
  5. Step 5: Solve for x
    x = 348,719,787.03/20,364.50
  6. Step 6: Final answer
    x = 17,123.91

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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.