Home / 14,685.20-20,260.75-8,311.16

Finding the Fourth Proportional to 14,685.20, 20,260.75 and 8,311.16

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Solution

The fourth proportional to 14,685.20, 20,260.75 and 8,311.16 is: 11,466.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685.20 : 20,260.75 = 8,311.16 : x
  2. Step 2: Convert to fraction form
    14,685.20/20,260.75 = 8,311.16/x
  3. Step 3: Cross multiply
    14,685.20x = 20,260.75 × 8,311.16
  4. Step 4: Simplify right side
    14,685.20x = 168,390,192.11
  5. Step 5: Solve for x
    x = 168,390,192.11/14,685.20
  6. Step 6: Final answer
    x = 11,466.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.