Home / 21,888.18-30,202.65-12,326.46

Finding the Fourth Proportional to 21,888.18, 30,202.65 and 12,326.46

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Solution

The fourth proportional to 21,888.18, 30,202.65 and 12,326.46 is: 17,008.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.18 : 30,202.65 = 12,326.46 : x
  2. Step 2: Convert to fraction form
    21,888.18/30,202.65 = 12,326.46/x
  3. Step 3: Cross multiply
    21,888.18x = 30,202.65 × 12,326.46
  4. Step 4: Simplify right side
    21,888.18x = 372,291,757.12
  5. Step 5: Solve for x
    x = 372,291,757.12/21,888.18
  6. Step 6: Final answer
    x = 17,008.80

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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.