Home / 38,135.76-52,626.42-21,139.70

Finding the Fourth Proportional to 38,135.76, 52,626.42 and 21,139.70

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Solution

The fourth proportional to 38,135.76, 52,626.42 and 21,139.70 is: 29,172.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,135.76 : 52,626.42 = 21,139.70 : x
  2. Step 2: Convert to fraction form
    38,135.76/52,626.42 = 21,139.70/x
  3. Step 3: Cross multiply
    38,135.76x = 52,626.42 × 21,139.70
  4. Step 4: Simplify right side
    38,135.76x = 1,112,506,730.87
  5. Step 5: Solve for x
    x = 1,112,506,730.87/38,135.76
  6. Step 6: Final answer
    x = 29,172.27

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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.