Home / 21,186.48-29,225.19-13,214.87

Finding the Fourth Proportional to 21,186.48, 29,225.19 and 13,214.87

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Solution

The fourth proportional to 21,186.48, 29,225.19 and 13,214.87 is: 18,228.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.48 : 29,225.19 = 13,214.87 : x
  2. Step 2: Convert to fraction form
    21,186.48/29,225.19 = 13,214.87/x
  3. Step 3: Cross multiply
    21,186.48x = 29,225.19 × 13,214.87
  4. Step 4: Simplify right side
    21,186.48x = 386,207,086.58
  5. Step 5: Solve for x
    x = 386,207,086.58/21,186.48
  6. Step 6: Final answer
    x = 18,228.94

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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.