Home / 11,421.19-15,766.01-8,276.77

Finding the Fourth Proportional to 11,421.19, 15,766.01 and 8,276.77

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Solution

The fourth proportional to 11,421.19, 15,766.01 and 8,276.77 is: 11,425.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.19 : 15,766.01 = 8,276.77 : x
  2. Step 2: Convert to fraction form
    11,421.19/15,766.01 = 8,276.77/x
  3. Step 3: Cross multiply
    11,421.19x = 15,766.01 × 8,276.77
  4. Step 4: Simplify right side
    11,421.19x = 130,491,638.59
  5. Step 5: Solve for x
    x = 130,491,638.59/11,421.19
  6. Step 6: Final answer
    x = 11,425.40

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Double scale
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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.