Home / 13,152.20-19,728.40-4,387.10

Finding the Fourth Proportional to 13,152.20, 19,728.40 and 4,387.10

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Solution

The fourth proportional to 13,152.20, 19,728.40 and 4,387.10 is: 6,580.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.20 : 19,728.40 = 4,387.10 : x
  2. Step 2: Convert to fraction form
    13,152.20/19,728.40 = 4,387.10/x
  3. Step 3: Cross multiply
    13,152.20x = 19,728.40 × 4,387.10
  4. Step 4: Simplify right side
    13,152.20x = 86,550,463.64
  5. Step 5: Solve for x
    x = 86,550,463.64/13,152.20
  6. Step 6: Final answer
    x = 6,580.68

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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.