Home / 15,780.60-23,622.30-9,187.20

Finding the Fourth Proportional to 15,780.60, 23,622.30 and 9,187.20

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Solution

The fourth proportional to 15,780.60, 23,622.30 and 9,187.20 is: 13,752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.60 : 23,622.30 = 9,187.20 : x
  2. Step 2: Convert to fraction form
    15,780.60/23,622.30 = 9,187.20/x
  3. Step 3: Cross multiply
    15,780.60x = 23,622.30 × 9,187.20
  4. Step 4: Simplify right side
    15,780.60x = 217,022,794.56
  5. Step 5: Solve for x
    x = 217,022,794.56/15,780.60
  6. Step 6: Final answer
    x = 13,752.51

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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.