Home / 13,124.16-18,111.68-8,091.70

Finding the Fourth Proportional to 13,124.16, 18,111.68 and 8,091.70

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Solution

The fourth proportional to 13,124.16, 18,111.68 and 8,091.70 is: 11,166.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.16 : 18,111.68 = 8,091.70 : x
  2. Step 2: Convert to fraction form
    13,124.16/18,111.68 = 8,091.70/x
  3. Step 3: Cross multiply
    13,124.16x = 18,111.68 × 8,091.70
  4. Step 4: Simplify right side
    13,124.16x = 146,554,281.06
  5. Step 5: Solve for x
    x = 146,554,281.06/13,124.16
  6. Step 6: Final answer
    x = 11,166.76

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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.