Home / 15,705.06-21,673.38-8,631.66

Finding the Fourth Proportional to 15,705.06, 21,673.38 and 8,631.66

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Solution

The fourth proportional to 15,705.06, 21,673.38 and 8,631.66 is: 11,911.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,705.06 : 21,673.38 = 8,631.66 : x
  2. Step 2: Convert to fraction form
    15,705.06/21,673.38 = 8,631.66/x
  3. Step 3: Cross multiply
    15,705.06x = 21,673.38 × 8,631.66
  4. Step 4: Simplify right side
    15,705.06x = 187,077,247.21
  5. Step 5: Solve for x
    x = 187,077,247.21/15,705.06
  6. Step 6: Final answer
    x = 11,911.91

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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.