Home / 13,751.16-18,980.10-8,718.36

Finding the Fourth Proportional to 13,751.16, 18,980.10 and 8,718.36

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Solution

The fourth proportional to 13,751.16, 18,980.10 and 8,718.36 is: 12,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.16 : 18,980.10 = 8,718.36 : x
  2. Step 2: Convert to fraction form
    13,751.16/18,980.10 = 8,718.36/x
  3. Step 3: Cross multiply
    13,751.16x = 18,980.10 × 8,718.36
  4. Step 4: Simplify right side
    13,751.16x = 165,475,344.64
  5. Step 5: Solve for x
    x = 165,475,344.64/13,751.16
  6. Step 6: Final answer
    x = 12,033.56

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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.