Home / 21,346.89-29,454.14-12,389.61

Finding the Fourth Proportional to 21,346.89, 29,454.14 and 12,389.61

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Solution

The fourth proportional to 21,346.89, 29,454.14 and 12,389.61 is: 17,095.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.89 : 29,454.14 = 12,389.61 : x
  2. Step 2: Convert to fraction form
    21,346.89/29,454.14 = 12,389.61/x
  3. Step 3: Cross multiply
    21,346.89x = 29,454.14 × 12,389.61
  4. Step 4: Simplify right side
    21,346.89x = 364,925,245.54
  5. Step 5: Solve for x
    x = 364,925,245.54/21,346.89
  6. Step 6: Final answer
    x = 17,095.01

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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.