Home / 13,390.52-18,479.36-8,084.28

Finding the Fourth Proportional to 13,390.52, 18,479.36 and 8,084.28

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Solution

The fourth proportional to 13,390.52, 18,479.36 and 8,084.28 is: 11,156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.52 : 18,479.36 = 8,084.28 : x
  2. Step 2: Convert to fraction form
    13,390.52/18,479.36 = 8,084.28/x
  3. Step 3: Cross multiply
    13,390.52x = 18,479.36 × 8,084.28
  4. Step 4: Simplify right side
    13,390.52x = 149,392,320.46
  5. Step 5: Solve for x
    x = 149,392,320.46/13,390.52
  6. Step 6: Final answer
    x = 11,156.57

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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.