Home / 15,296.08-21,109.14-8,581.72

Finding the Fourth Proportional to 15,296.08, 21,109.14 and 8,581.72

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Solution

The fourth proportional to 15,296.08, 21,109.14 and 8,581.72 is: 11,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.08 : 21,109.14 = 8,581.72 : x
  2. Step 2: Convert to fraction form
    15,296.08/21,109.14 = 8,581.72/x
  3. Step 3: Cross multiply
    15,296.08x = 21,109.14 × 8,581.72
  4. Step 4: Simplify right side
    15,296.08x = 181,152,728.92
  5. Step 5: Solve for x
    x = 181,152,728.92/15,296.08
  6. Step 6: Final answer
    x = 11,843.08

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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.