Home / 12,480.58-18,639.95-11,308.24

Finding the Fourth Proportional to 12,480.58, 18,639.95 and 11,308.24

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Solution

The fourth proportional to 12,480.58, 18,639.95 and 11,308.24 is: 16,889.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.58 : 18,639.95 = 11,308.24 : x
  2. Step 2: Convert to fraction form
    12,480.58/18,639.95 = 11,308.24/x
  3. Step 3: Cross multiply
    12,480.58x = 18,639.95 × 11,308.24
  4. Step 4: Simplify right side
    12,480.58x = 210,785,028.19
  5. Step 5: Solve for x
    x = 210,785,028.19/12,480.58
  6. Step 6: Final answer
    x = 16,889.04

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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.