Home / 13,712.08-18,915.24-8,667.04

Finding the Fourth Proportional to 13,712.08, 18,915.24 and 8,667.04

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Solution

The fourth proportional to 13,712.08, 18,915.24 and 8,667.04 is: 11,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.08 : 18,915.24 = 8,667.04 : x
  2. Step 2: Convert to fraction form
    13,712.08/18,915.24 = 8,667.04/x
  3. Step 3: Cross multiply
    13,712.08x = 18,915.24 × 8,667.04
  4. Step 4: Simplify right side
    13,712.08x = 163,939,141.69
  5. Step 5: Solve for x
    x = 163,939,141.69/13,712.08
  6. Step 6: Final answer
    x = 11,955.82

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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.