Home / 38,390.70-57,618.45-18,686.10

Finding the Fourth Proportional to 38,390.70, 57,618.45 and 18,686.10

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Solution

The fourth proportional to 38,390.70, 57,618.45 and 18,686.10 is: 28,044.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,390.70 : 57,618.45 = 18,686.10 : x
  2. Step 2: Convert to fraction form
    38,390.70/57,618.45 = 18,686.10/x
  3. Step 3: Cross multiply
    38,390.70x = 57,618.45 × 18,686.10
  4. Step 4: Simplify right side
    38,390.70x = 1,076,664,118.55
  5. Step 5: Solve for x
    x = 1,076,664,118.55/38,390.70
  6. Step 6: Final answer
    x = 28,044.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.