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Finding the Fourth Proportional to 38,538.60, 57,807.90 and 10,836.60

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Solution

The fourth proportional to 38,538.60, 57,807.90 and 10,836.60 is: 16,254.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,538.60 : 57,807.90 = 10,836.60 : x
  2. Step 2: Convert to fraction form
    38,538.60/57,807.90 = 10,836.60/x
  3. Step 3: Cross multiply
    38,538.60x = 57,807.90 × 10,836.60
  4. Step 4: Simplify right side
    38,538.60x = 626,441,089.14
  5. Step 5: Solve for x
    x = 626,441,089.14/38,538.60
  6. Step 6: Final answer
    x = 16,254.90

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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.