Home / 13,681.16-18,877.62-8,090.12

Finding the Fourth Proportional to 13,681.16, 18,877.62 and 8,090.12

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Solution

The fourth proportional to 13,681.16, 18,877.62 and 8,090.12 is: 11,162.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.16 : 18,877.62 = 8,090.12 : x
  2. Step 2: Convert to fraction form
    13,681.16/18,877.62 = 8,090.12/x
  3. Step 3: Cross multiply
    13,681.16x = 18,877.62 × 8,090.12
  4. Step 4: Simplify right side
    13,681.16x = 152,722,211.11
  5. Step 5: Solve for x
    x = 152,722,211.11/13,681.16
  6. Step 6: Final answer
    x = 11,162.96

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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.