Home / 10,128.92-15,178.26-8,292.92

Finding the Fourth Proportional to 10,128.92, 15,178.26 and 8,292.92

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Solution

The fourth proportional to 10,128.92, 15,178.26 and 8,292.92 is: 12,427.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.92 : 15,178.26 = 8,292.92 : x
  2. Step 2: Convert to fraction form
    10,128.92/15,178.26 = 8,292.92/x
  3. Step 3: Cross multiply
    10,128.92x = 15,178.26 × 8,292.92
  4. Step 4: Simplify right side
    10,128.92x = 125,872,095.92
  5. Step 5: Solve for x
    x = 125,872,095.92/10,128.92
  6. Step 6: Final answer
    x = 12,427.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.