Home / 38,645.28-53,325.84-21,650.40

Finding the Fourth Proportional to 38,645.28, 53,325.84 and 21,650.40

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Solution

The fourth proportional to 38,645.28, 53,325.84 and 21,650.40 is: 29,874.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.28 : 53,325.84 = 21,650.40 : x
  2. Step 2: Convert to fraction form
    38,645.28/53,325.84 = 21,650.40/x
  3. Step 3: Cross multiply
    38,645.28x = 53,325.84 × 21,650.40
  4. Step 4: Simplify right side
    38,645.28x = 1,154,525,766.34
  5. Step 5: Solve for x
    x = 1,154,525,766.34/38,645.28
  6. Step 6: Final answer
    x = 29,874.95

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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.