Home / 13,133.32-18,124.30-8,100.88

Finding the Fourth Proportional to 13,133.32, 18,124.30 and 8,100.88

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Solution

The fourth proportional to 13,133.32, 18,124.30 and 8,100.88 is: 11,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.32 : 18,124.30 = 8,100.88 : x
  2. Step 2: Convert to fraction form
    13,133.32/18,124.30 = 8,100.88/x
  3. Step 3: Cross multiply
    13,133.32x = 18,124.30 × 8,100.88
  4. Step 4: Simplify right side
    13,133.32x = 146,822,779.38
  5. Step 5: Solve for x
    x = 146,822,779.38/13,133.32
  6. Step 6: Final answer
    x = 11,179.41

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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.