Home / 12,117.85-16,679.30-8,574.91

Finding the Fourth Proportional to 12,117.85, 16,679.30 and 8,574.91

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Solution

The fourth proportional to 12,117.85, 16,679.30 and 8,574.91 is: 11,802.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.85 : 16,679.30 = 8,574.91 : x
  2. Step 2: Convert to fraction form
    12,117.85/16,679.30 = 8,574.91/x
  3. Step 3: Cross multiply
    12,117.85x = 16,679.30 × 8,574.91
  4. Step 4: Simplify right side
    12,117.85x = 143,023,370.09
  5. Step 5: Solve for x
    x = 143,023,370.09/12,117.85
  6. Step 6: Final answer
    x = 11,802.71

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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.