Home / 21,642.41-29,866.38-12,081.74

Finding the Fourth Proportional to 21,642.41, 29,866.38 and 12,081.74

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Solution

The fourth proportional to 21,642.41, 29,866.38 and 12,081.74 is: 16,672.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,642.41 : 29,866.38 = 12,081.74 : x
  2. Step 2: Convert to fraction form
    21,642.41/29,866.38 = 12,081.74/x
  3. Step 3: Cross multiply
    21,642.41x = 29,866.38 × 12,081.74
  4. Step 4: Simplify right side
    21,642.41x = 360,837,688.57
  5. Step 5: Solve for x
    x = 360,837,688.57/21,642.41
  6. Step 6: Final answer
    x = 16,672.72

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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.