Home / 21,279.47-29,369.23-12,332.41

Finding the Fourth Proportional to 21,279.47, 29,369.23 and 12,332.41

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Solution

The fourth proportional to 21,279.47, 29,369.23 and 12,332.41 is: 17,020.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.47 : 29,369.23 = 12,332.41 : x
  2. Step 2: Convert to fraction form
    21,279.47/29,369.23 = 12,332.41/x
  3. Step 3: Cross multiply
    21,279.47x = 29,369.23 × 12,332.41
  4. Step 4: Simplify right side
    21,279.47x = 362,193,281.49
  5. Step 5: Solve for x
    x = 362,193,281.49/21,279.47
  6. Step 6: Final answer
    x = 17,020.79

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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.