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Finding the Fourth Proportional to 38,585.88, 57,870.03 and 18,585.15

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Solution

The fourth proportional to 38,585.88, 57,870.03 and 18,585.15 is: 27,873.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,585.88 : 57,870.03 = 18,585.15 : x
  2. Step 2: Convert to fraction form
    38,585.88/57,870.03 = 18,585.15/x
  3. Step 3: Cross multiply
    38,585.88x = 57,870.03 × 18,585.15
  4. Step 4: Simplify right side
    38,585.88x = 1,075,523,188.05
  5. Step 5: Solve for x
    x = 1,075,523,188.05/38,585.88
  6. Step 6: Final answer
    x = 27,873.49

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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.