Home / 12,488.08-17,213.70-9,831.28

Finding the Fourth Proportional to 12,488.08, 17,213.70 and 9,831.28

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Solution

The fourth proportional to 12,488.08, 17,213.70 and 9,831.28 is: 13,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.08 : 17,213.70 = 9,831.28 : x
  2. Step 2: Convert to fraction form
    12,488.08/17,213.70 = 9,831.28/x
  3. Step 3: Cross multiply
    12,488.08x = 17,213.70 × 9,831.28
  4. Step 4: Simplify right side
    12,488.08x = 169,232,704.54
  5. Step 5: Solve for x
    x = 169,232,704.54/12,488.08
  6. Step 6: Final answer
    x = 13,551.54

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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.