Home / 15,640.30-21,583.68-8,566.72

Finding the Fourth Proportional to 15,640.30, 21,583.68 and 8,566.72

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Solution

The fourth proportional to 15,640.30, 21,583.68 and 8,566.72 is: 11,822.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.30 : 21,583.68 = 8,566.72 : x
  2. Step 2: Convert to fraction form
    15,640.30/21,583.68 = 8,566.72/x
  3. Step 3: Cross multiply
    15,640.30x = 21,583.68 × 8,566.72
  4. Step 4: Simplify right side
    15,640.30x = 184,901,343.13
  5. Step 5: Solve for x
    x = 184,901,343.13/15,640.30
  6. Step 6: Final answer
    x = 11,822.11

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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.