Home / 38,147.18-52,646.20-21,156.74

Finding the Fourth Proportional to 38,147.18, 52,646.20 and 21,156.74

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Solution

The fourth proportional to 38,147.18, 52,646.20 and 21,156.74 is: 29,198.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,147.18 : 52,646.20 = 21,156.74 : x
  2. Step 2: Convert to fraction form
    38,147.18/52,646.20 = 21,156.74/x
  3. Step 3: Cross multiply
    38,147.18x = 52,646.20 × 21,156.74
  4. Step 4: Simplify right side
    38,147.18x = 1,113,821,965.39
  5. Step 5: Solve for x
    x = 1,113,821,965.39/38,147.18
  6. Step 6: Final answer
    x = 29,198.02

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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.