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Finding the Fourth Proportional to 13,364.70, 20,123.87 and 10,292.70

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Solution

The fourth proportional to 13,364.70, 20,123.87 and 10,292.70 is: 15,498.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,364.70 : 20,123.87 = 10,292.70 : x
  2. Step 2: Convert to fraction form
    13,364.70/20,123.87 = 10,292.70/x
  3. Step 3: Cross multiply
    13,364.70x = 20,123.87 × 10,292.70
  4. Step 4: Simplify right side
    13,364.70x = 207,128,905.29
  5. Step 5: Solve for x
    x = 207,128,905.29/13,364.70
  6. Step 6: Final answer
    x = 15,498.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.