Home / 21,292.34-29,381.19-12,342.65

Finding the Fourth Proportional to 21,292.34, 29,381.19 and 12,342.65

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Solution

The fourth proportional to 21,292.34, 29,381.19 and 12,342.65 is: 17,031.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.34 : 29,381.19 = 12,342.65 : x
  2. Step 2: Convert to fraction form
    21,292.34/29,381.19 = 12,342.65/x
  3. Step 3: Cross multiply
    21,292.34x = 29,381.19 × 12,342.65
  4. Step 4: Simplify right side
    21,292.34x = 362,641,744.75
  5. Step 5: Solve for x
    x = 362,641,744.75/21,292.34
  6. Step 6: Final answer
    x = 17,031.56

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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.