Home / 15,279.30-21,031.16-11,293.47

Finding the Fourth Proportional to 15,279.30, 21,031.16 and 11,293.47

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Solution

The fourth proportional to 15,279.30, 21,031.16 and 11,293.47 is: 15,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.30 : 21,031.16 = 11,293.47 : x
  2. Step 2: Convert to fraction form
    15,279.30/21,031.16 = 11,293.47/x
  3. Step 3: Cross multiply
    15,279.30x = 21,031.16 × 11,293.47
  4. Step 4: Simplify right side
    15,279.30x = 237,514,718.06
  5. Step 5: Solve for x
    x = 237,514,718.06/15,279.30
  6. Step 6: Final answer
    x = 15,544.87

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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.