Home / 10,759.20-16,138.80-6,374.40

Finding the Fourth Proportional to 10,759.20, 16,138.80 and 6,374.40

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Solution

The fourth proportional to 10,759.20, 16,138.80 and 6,374.40 is: 9,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,759.20 : 16,138.80 = 6,374.40 : x
  2. Step 2: Convert to fraction form
    10,759.20/16,138.80 = 6,374.40/x
  3. Step 3: Cross multiply
    10,759.20x = 16,138.80 × 6,374.40
  4. Step 4: Simplify right side
    10,759.20x = 102,875,166.72
  5. Step 5: Solve for x
    x = 102,875,166.72/10,759.20
  6. Step 6: Final answer
    x = 9,561.60

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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.