Home / 21,335.67-29,448.50-12,959.19

Finding the Fourth Proportional to 21,335.67, 29,448.50 and 12,959.19

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Solution

The fourth proportional to 21,335.67, 29,448.50 and 12,959.19 is: 17,886.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.67 : 29,448.50 = 12,959.19 : x
  2. Step 2: Convert to fraction form
    21,335.67/29,448.50 = 12,959.19/x
  3. Step 3: Cross multiply
    21,335.67x = 29,448.50 × 12,959.19
  4. Step 4: Simplify right side
    21,335.67x = 381,628,641.92
  5. Step 5: Solve for x
    x = 381,628,641.92/21,335.67
  6. Step 6: Final answer
    x = 17,886.88

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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.