Home / 38,140.35-52,636.80-21,149.92

Finding the Fourth Proportional to 38,140.35, 52,636.80 and 21,149.92

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Solution

The fourth proportional to 38,140.35, 52,636.80 and 21,149.92 is: 29,188.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,140.35 : 52,636.80 = 21,149.92 : x
  2. Step 2: Convert to fraction form
    38,140.35/52,636.80 = 21,149.92/x
  3. Step 3: Cross multiply
    38,140.35x = 52,636.80 × 21,149.92
  4. Step 4: Simplify right side
    38,140.35x = 1,113,264,223.75
  5. Step 5: Solve for x
    x = 1,113,264,223.75/38,140.35
  6. Step 6: Final answer
    x = 29,188.62

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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.