Home / 15,279.13-21,085.32-8,910.10

Finding the Fourth Proportional to 15,279.13, 21,085.32 and 8,910.10

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Solution

The fourth proportional to 15,279.13, 21,085.32 and 8,910.10 is: 12,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.13 : 21,085.32 = 8,910.10 : x
  2. Step 2: Convert to fraction form
    15,279.13/21,085.32 = 8,910.10/x
  3. Step 3: Cross multiply
    15,279.13x = 21,085.32 × 8,910.10
  4. Step 4: Simplify right side
    15,279.13x = 187,872,309.73
  5. Step 5: Solve for x
    x = 187,872,309.73/15,279.13
  6. Step 6: Final answer
    x = 12,296.01

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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.