Home / 15,228.52-21,012.64-8,514.20

Finding the Fourth Proportional to 15,228.52, 21,012.64 and 8,514.20

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Solution

The fourth proportional to 15,228.52, 21,012.64 and 8,514.20 is: 11,748.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.52 : 21,012.64 = 8,514.20 : x
  2. Step 2: Convert to fraction form
    15,228.52/21,012.64 = 8,514.20/x
  3. Step 3: Cross multiply
    15,228.52x = 21,012.64 × 8,514.20
  4. Step 4: Simplify right side
    15,228.52x = 178,905,671.85
  5. Step 5: Solve for x
    x = 178,905,671.85/15,228.52
  6. Step 6: Final answer
    x = 11,748.07

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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.