Home / 13,517.60-20,276.40-6,605.60

Finding the Fourth Proportional to 13,517.60, 20,276.40 and 6,605.60

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Solution

The fourth proportional to 13,517.60, 20,276.40 and 6,605.60 is: 9,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.60 : 20,276.40 = 6,605.60 : x
  2. Step 2: Convert to fraction form
    13,517.60/20,276.40 = 6,605.60/x
  3. Step 3: Cross multiply
    13,517.60x = 20,276.40 × 6,605.60
  4. Step 4: Simplify right side
    13,517.60x = 133,937,787.84
  5. Step 5: Solve for x
    x = 133,937,787.84/13,517.60
  6. Step 6: Final answer
    x = 9,908.40

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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.