Home / 15,680.43-21,638.85-8,510.31

Finding the Fourth Proportional to 15,680.43, 21,638.85 and 8,510.31

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Solution

The fourth proportional to 15,680.43, 21,638.85 and 8,510.31 is: 11,744.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.43 : 21,638.85 = 8,510.31 : x
  2. Step 2: Convert to fraction form
    15,680.43/21,638.85 = 8,510.31/x
  3. Step 3: Cross multiply
    15,680.43x = 21,638.85 × 8,510.31
  4. Step 4: Simplify right side
    15,680.43x = 184,153,321.54
  5. Step 5: Solve for x
    x = 184,153,321.54/15,680.43
  6. Step 6: Final answer
    x = 11,744.15

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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.