Home / 12,167.16-18,315.32-8,681.33

Finding the Fourth Proportional to 12,167.16, 18,315.32 and 8,681.33

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Solution

The fourth proportional to 12,167.16, 18,315.32 and 8,681.33 is: 13,068.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.16 : 18,315.32 = 8,681.33 : x
  2. Step 2: Convert to fraction form
    12,167.16/18,315.32 = 8,681.33/x
  3. Step 3: Cross multiply
    12,167.16x = 18,315.32 × 8,681.33
  4. Step 4: Simplify right side
    12,167.16x = 159,001,236.33
  5. Step 5: Solve for x
    x = 159,001,236.33/12,167.16
  6. Step 6: Final answer
    x = 13,068.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.