Home / 12,271.40-18,407.10-8,116.10

Finding the Fourth Proportional to 12,271.40, 18,407.10 and 8,116.10

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Solution

The fourth proportional to 12,271.40, 18,407.10 and 8,116.10 is: 12,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,271.40 : 18,407.10 = 8,116.10 : x
  2. Step 2: Convert to fraction form
    12,271.40/18,407.10 = 8,116.10/x
  3. Step 3: Cross multiply
    12,271.40x = 18,407.10 × 8,116.10
  4. Step 4: Simplify right side
    12,271.40x = 149,393,864.31
  5. Step 5: Solve for x
    x = 149,393,864.31/12,271.40
  6. Step 6: Final answer
    x = 12,174.15

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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.