Home / 12,952.60-19,419.30-8,782.20

Finding the Fourth Proportional to 12,952.60, 19,419.30 and 8,782.20

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Solution

The fourth proportional to 12,952.60, 19,419.30 and 8,782.20 is: 13,166.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,952.60 : 19,419.30 = 8,782.20 : x
  2. Step 2: Convert to fraction form
    12,952.60/19,419.30 = 8,782.20/x
  3. Step 3: Cross multiply
    12,952.60x = 19,419.30 × 8,782.20
  4. Step 4: Simplify right side
    12,952.60x = 170,544,176.46
  5. Step 5: Solve for x
    x = 170,544,176.46/12,952.60
  6. Step 6: Final answer
    x = 13,166.79

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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.