Home / 8,539.40-12,818.70-6,600.20

Finding the Fourth Proportional to 8,539.40, 12,818.70 and 6,600.20

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Solution

The fourth proportional to 8,539.40, 12,818.70 and 6,600.20 is: 9,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.40 : 12,818.70 = 6,600.20 : x
  2. Step 2: Convert to fraction form
    8,539.40/12,818.70 = 6,600.20/x
  3. Step 3: Cross multiply
    8,539.40x = 12,818.70 × 6,600.20
  4. Step 4: Simplify right side
    8,539.40x = 84,605,983.74
  5. Step 5: Solve for x
    x = 84,605,983.74/8,539.40
  6. Step 6: Final answer
    x = 9,907.72

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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.