Home / 15,686.51-21,642.11-8,967.38

Finding the Fourth Proportional to 15,686.51, 21,642.11 and 8,967.38

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Solution

The fourth proportional to 15,686.51, 21,642.11 and 8,967.38 is: 12,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686.51 : 21,642.11 = 8,967.38 : x
  2. Step 2: Convert to fraction form
    15,686.51/21,642.11 = 8,967.38/x
  3. Step 3: Cross multiply
    15,686.51x = 21,642.11 × 8,967.38
  4. Step 4: Simplify right side
    15,686.51x = 194,072,871.32
  5. Step 5: Solve for x
    x = 194,072,871.32/15,686.51
  6. Step 6: Final answer
    x = 12,371.96

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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.