Home / 15,512.70-21,407.06-8,798.94

Finding the Fourth Proportional to 15,512.70, 21,407.06 and 8,798.94

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Solution

The fourth proportional to 15,512.70, 21,407.06 and 8,798.94 is: 12,142.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.70 : 21,407.06 = 8,798.94 : x
  2. Step 2: Convert to fraction form
    15,512.70/21,407.06 = 8,798.94/x
  3. Step 3: Cross multiply
    15,512.70x = 21,407.06 × 8,798.94
  4. Step 4: Simplify right side
    15,512.70x = 188,359,436.52
  5. Step 5: Solve for x
    x = 188,359,436.52/15,512.70
  6. Step 6: Final answer
    x = 12,142.27

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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.