Home / 21,718.07-29,972.76-12,288.44

Finding the Fourth Proportional to 21,718.07, 29,972.76 and 12,288.44

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Solution

The fourth proportional to 21,718.07, 29,972.76 and 12,288.44 is: 16,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.07 : 29,972.76 = 12,288.44 : x
  2. Step 2: Convert to fraction form
    21,718.07/29,972.76 = 12,288.44/x
  3. Step 3: Cross multiply
    21,718.07x = 29,972.76 × 12,288.44
  4. Step 4: Simplify right side
    21,718.07x = 368,318,462.89
  5. Step 5: Solve for x
    x = 368,318,462.89/21,718.07
  6. Step 6: Final answer
    x = 16,959.08

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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.