Home / 26,640.78-36,766.42-15,312.12

Finding the Fourth Proportional to 26,640.78, 36,766.42 and 15,312.12

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Solution

The fourth proportional to 26,640.78, 36,766.42 and 15,312.12 is: 21,131.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640.78 : 36,766.42 = 15,312.12 : x
  2. Step 2: Convert to fraction form
    26,640.78/36,766.42 = 15,312.12/x
  3. Step 3: Cross multiply
    26,640.78x = 36,766.42 × 15,312.12
  4. Step 4: Simplify right side
    26,640.78x = 562,971,835.01
  5. Step 5: Solve for x
    x = 562,971,835.01/26,640.78
  6. Step 6: Final answer
    x = 21,131.96

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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.