Home / 10,440.90-14,400.06-9,179.28

Finding the Fourth Proportional to 10,440.90, 14,400.06 and 9,179.28

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Solution

The fourth proportional to 10,440.90, 14,400.06 and 9,179.28 is: 12,660.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.90 : 14,400.06 = 9,179.28 : x
  2. Step 2: Convert to fraction form
    10,440.90/14,400.06 = 9,179.28/x
  3. Step 3: Cross multiply
    10,440.90x = 14,400.06 × 9,179.28
  4. Step 4: Simplify right side
    10,440.90x = 132,182,182.76
  5. Step 5: Solve for x
    x = 132,182,182.76/10,440.90
  6. Step 6: Final answer
    x = 12,660.04

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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.