Home / 12,818.80-17,690.52-8,562.40

Finding the Fourth Proportional to 12,818.80, 17,690.52 and 8,562.40

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Solution

The fourth proportional to 12,818.80, 17,690.52 and 8,562.40 is: 11,816.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.80 : 17,690.52 = 8,562.40 : x
  2. Step 2: Convert to fraction form
    12,818.80/17,690.52 = 8,562.40/x
  3. Step 3: Cross multiply
    12,818.80x = 17,690.52 × 8,562.40
  4. Step 4: Simplify right side
    12,818.80x = 151,473,308.45
  5. Step 5: Solve for x
    x = 151,473,308.45/12,818.80
  6. Step 6: Final answer
    x = 11,816.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.