Home / 21,367.91-29,479.87-13,407.23

Finding the Fourth Proportional to 21,367.91, 29,479.87 and 13,407.23

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Solution

The fourth proportional to 21,367.91, 29,479.87 and 13,407.23 is: 18,497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.91 : 29,479.87 = 13,407.23 : x
  2. Step 2: Convert to fraction form
    21,367.91/29,479.87 = 13,407.23/x
  3. Step 3: Cross multiply
    21,367.91x = 29,479.87 × 13,407.23
  4. Step 4: Simplify right side
    21,367.91x = 395,243,397.46
  5. Step 5: Solve for x
    x = 395,243,397.46/21,367.91
  6. Step 6: Final answer
    x = 18,497.05

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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.