Home / 21,224.64-29,290.17-13,271.47

Finding the Fourth Proportional to 21,224.64, 29,290.17 and 13,271.47

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Solution

The fourth proportional to 21,224.64, 29,290.17 and 13,271.47 is: 18,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.64 : 29,290.17 = 13,271.47 : x
  2. Step 2: Convert to fraction form
    21,224.64/29,290.17 = 13,271.47/x
  3. Step 3: Cross multiply
    21,224.64x = 29,290.17 × 13,271.47
  4. Step 4: Simplify right side
    21,224.64x = 388,723,612.45
  5. Step 5: Solve for x
    x = 388,723,612.45/21,224.64
  6. Step 6: Final answer
    x = 18,314.73

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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.