Home / 10,288.80-14,188.80-7,474.80

Finding the Fourth Proportional to 10,288.80, 14,188.80 and 7,474.80

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Solution

The fourth proportional to 10,288.80, 14,188.80 and 7,474.80 is: 10,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,288.80 : 14,188.80 = 7,474.80 : x
  2. Step 2: Convert to fraction form
    10,288.80/14,188.80 = 7,474.80/x
  3. Step 3: Cross multiply
    10,288.80x = 14,188.80 × 7,474.80
  4. Step 4: Simplify right side
    10,288.80x = 106,058,442.24
  5. Step 5: Solve for x
    x = 106,058,442.24/10,288.80
  6. Step 6: Final answer
    x = 10,308.14

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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.