Home / 12,526.83-17,280.99-8,279.55

Finding the Fourth Proportional to 12,526.83, 17,280.99 and 8,279.55

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Solution

The fourth proportional to 12,526.83, 17,280.99 and 8,279.55 is: 11,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.83 : 17,280.99 = 8,279.55 : x
  2. Step 2: Convert to fraction form
    12,526.83/17,280.99 = 8,279.55/x
  3. Step 3: Cross multiply
    12,526.83x = 17,280.99 × 8,279.55
  4. Step 4: Simplify right side
    12,526.83x = 143,078,820.75
  5. Step 5: Solve for x
    x = 143,078,820.75/12,526.83
  6. Step 6: Final answer
    x = 11,421.79

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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.