Home / 10,255.75-15,303.13-9,628.81

Finding the Fourth Proportional to 10,255.75, 15,303.13 and 9,628.81

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Solution

The fourth proportional to 10,255.75, 15,303.13 and 9,628.81 is: 14,367.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.75 : 15,303.13 = 9,628.81 : x
  2. Step 2: Convert to fraction form
    10,255.75/15,303.13 = 9,628.81/x
  3. Step 3: Cross multiply
    10,255.75x = 15,303.13 × 9,628.81
  4. Step 4: Simplify right side
    10,255.75x = 147,350,868.85
  5. Step 5: Solve for x
    x = 147,350,868.85/10,255.75
  6. Step 6: Final answer
    x = 14,367.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.