Home / 21,347.61-29,459.19-12,394.86

Finding the Fourth Proportional to 21,347.61, 29,459.19 and 12,394.86

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Solution

The fourth proportional to 21,347.61, 29,459.19 and 12,394.86 is: 17,104.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.61 : 29,459.19 = 12,394.86 : x
  2. Step 2: Convert to fraction form
    21,347.61/29,459.19 = 12,394.86/x
  3. Step 3: Cross multiply
    21,347.61x = 29,459.19 × 12,394.86
  4. Step 4: Simplify right side
    21,347.61x = 365,142,535.76
  5. Step 5: Solve for x
    x = 365,142,535.76/21,347.61
  6. Step 6: Final answer
    x = 17,104.61

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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.