Home / 28,086.10-38,692.90-19,572.75

Finding the Fourth Proportional to 28,086.10, 38,692.90 and 19,572.75

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Solution

The fourth proportional to 28,086.10, 38,692.90 and 19,572.75 is: 26,964.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.10 : 38,692.90 = 19,572.75 : x
  2. Step 2: Convert to fraction form
    28,086.10/38,692.90 = 19,572.75/x
  3. Step 3: Cross multiply
    28,086.10x = 38,692.90 × 19,572.75
  4. Step 4: Simplify right side
    28,086.10x = 757,326,360.61
  5. Step 5: Solve for x
    x = 757,326,360.61/28,086.10
  6. Step 6: Final answer
    x = 26,964.45

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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.