Home / 12,356.20-18,534.30-6,807.40

Finding the Fourth Proportional to 12,356.20, 18,534.30 and 6,807.40

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Solution

The fourth proportional to 12,356.20, 18,534.30 and 6,807.40 is: 10,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.20 : 18,534.30 = 6,807.40 : x
  2. Step 2: Convert to fraction form
    12,356.20/18,534.30 = 6,807.40/x
  3. Step 3: Cross multiply
    12,356.20x = 18,534.30 × 6,807.40
  4. Step 4: Simplify right side
    12,356.20x = 126,170,393.82
  5. Step 5: Solve for x
    x = 126,170,393.82/12,356.20
  6. Step 6: Final answer
    x = 10,211.10

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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.