Home / 9,521.20-14,281.80-8,111.80

Finding the Fourth Proportional to 9,521.20, 14,281.80 and 8,111.80

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Solution

The fourth proportional to 9,521.20, 14,281.80 and 8,111.80 is: 12,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.20 : 14,281.80 = 8,111.80 : x
  2. Step 2: Convert to fraction form
    9,521.20/14,281.80 = 8,111.80/x
  3. Step 3: Cross multiply
    9,521.20x = 14,281.80 × 8,111.80
  4. Step 4: Simplify right side
    9,521.20x = 115,851,105.24
  5. Step 5: Solve for x
    x = 115,851,105.24/9,521.20
  6. Step 6: Final answer
    x = 12,167.70

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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.