Home / 12,521.42-17,279.76-6,856.07

Finding the Fourth Proportional to 12,521.42, 17,279.76 and 6,856.07

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Solution

The fourth proportional to 12,521.42, 17,279.76 and 6,856.07 is: 9,461.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.42 : 17,279.76 = 6,856.07 : x
  2. Step 2: Convert to fraction form
    12,521.42/17,279.76 = 6,856.07/x
  3. Step 3: Cross multiply
    12,521.42x = 17,279.76 × 6,856.07
  4. Step 4: Simplify right side
    12,521.42x = 118,471,157.74
  5. Step 5: Solve for x
    x = 118,471,157.74/12,521.42
  6. Step 6: Final answer
    x = 9,461.48

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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.