Home / 15,231.14-21,021.35-9,264.68

Finding the Fourth Proportional to 15,231.14, 21,021.35 and 9,264.68

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Solution

The fourth proportional to 15,231.14, 21,021.35 and 9,264.68 is: 12,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.14 : 21,021.35 = 9,264.68 : x
  2. Step 2: Convert to fraction form
    15,231.14/21,021.35 = 9,264.68/x
  3. Step 3: Cross multiply
    15,231.14x = 21,021.35 × 9,264.68
  4. Step 4: Simplify right side
    15,231.14x = 194,755,929.49
  5. Step 5: Solve for x
    x = 194,755,929.49/15,231.14
  6. Step 6: Final answer
    x = 12,786.70

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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.