Home / 13,756.17-18,988.03-8,090.65

Finding the Fourth Proportional to 13,756.17, 18,988.03 and 8,090.65

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Solution

The fourth proportional to 13,756.17, 18,988.03 and 8,090.65 is: 11,167.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.17 : 18,988.03 = 8,090.65 : x
  2. Step 2: Convert to fraction form
    13,756.17/18,988.03 = 8,090.65/x
  3. Step 3: Cross multiply
    13,756.17x = 18,988.03 × 8,090.65
  4. Step 4: Simplify right side
    13,756.17x = 153,625,444.44
  5. Step 5: Solve for x
    x = 153,625,444.44/13,756.17
  6. Step 6: Final answer
    x = 11,167.75

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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.