Home / 19,318.60-28,972.32-8,782.76

Finding the Fourth Proportional to 19,318.60, 28,972.32 and 8,782.76

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Solution

The fourth proportional to 19,318.60, 28,972.32 and 8,782.76 is: 13,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.60 : 28,972.32 = 8,782.76 : x
  2. Step 2: Convert to fraction form
    19,318.60/28,972.32 = 8,782.76/x
  3. Step 3: Cross multiply
    19,318.60x = 28,972.32 × 8,782.76
  4. Step 4: Simplify right side
    19,318.60x = 254,456,933.20
  5. Step 5: Solve for x
    x = 254,456,933.20/19,318.60
  6. Step 6: Final answer
    x = 13,171.60

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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.