Home / 15,412.30-21,279.40-10,116.12

Finding the Fourth Proportional to 15,412.30, 21,279.40 and 10,116.12

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Solution

The fourth proportional to 15,412.30, 21,279.40 and 10,116.12 is: 13,967.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.30 : 21,279.40 = 10,116.12 : x
  2. Step 2: Convert to fraction form
    15,412.30/21,279.40 = 10,116.12/x
  3. Step 3: Cross multiply
    15,412.30x = 21,279.40 × 10,116.12
  4. Step 4: Simplify right side
    15,412.30x = 215,264,963.93
  5. Step 5: Solve for x
    x = 215,264,963.93/15,412.30
  6. Step 6: Final answer
    x = 13,967.09

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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.