Home / 45,165.60-67,748.40-11,890.80

Finding the Fourth Proportional to 45,165.60, 67,748.40 and 11,890.80

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Solution

The fourth proportional to 45,165.60, 67,748.40 and 11,890.80 is: 17,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,165.60 : 67,748.40 = 11,890.80 : x
  2. Step 2: Convert to fraction form
    45,165.60/67,748.40 = 11,890.80/x
  3. Step 3: Cross multiply
    45,165.60x = 67,748.40 × 11,890.80
  4. Step 4: Simplify right side
    45,165.60x = 805,582,674.72
  5. Step 5: Solve for x
    x = 805,582,674.72/45,165.60
  6. Step 6: Final answer
    x = 17,836.20

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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.