Home / 21,479.34-29,642.85-12,049.32

Finding the Fourth Proportional to 21,479.34, 29,642.85 and 12,049.32

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Solution

The fourth proportional to 21,479.34, 29,642.85 and 12,049.32 is: 16,628.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.34 : 29,642.85 = 12,049.32 : x
  2. Step 2: Convert to fraction form
    21,479.34/29,642.85 = 12,049.32/x
  3. Step 3: Cross multiply
    21,479.34x = 29,642.85 × 12,049.32
  4. Step 4: Simplify right side
    21,479.34x = 357,176,185.36
  5. Step 5: Solve for x
    x = 357,176,185.36/21,479.34
  6. Step 6: Final answer
    x = 16,628.82

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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.