Home / 12,521.12-17,279-6,855.80

Finding the Fourth Proportional to 12,521.12, 17,279 and 6,855.80

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Solution

The fourth proportional to 12,521.12, 17,279 and 6,855.80 is: 9,460.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.12 : 17,279 = 6,855.80 : x
  2. Step 2: Convert to fraction form
    12,521.12/17,279 = 6,855.80/x
  3. Step 3: Cross multiply
    12,521.12x = 17,279 × 6,855.80
  4. Step 4: Simplify right side
    12,521.12x = 118,461,368.20
  5. Step 5: Solve for x
    x = 118,461,368.20/12,521.12
  6. Step 6: Final answer
    x = 9,460.92

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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.