Home / 21,888.16-30,195.12-14,331.16

Finding the Fourth Proportional to 21,888.16, 30,195.12 and 14,331.16

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Solution

The fourth proportional to 21,888.16, 30,195.12 and 14,331.16 is: 19,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.16 : 30,195.12 = 14,331.16 : x
  2. Step 2: Convert to fraction form
    21,888.16/30,195.12 = 14,331.16/x
  3. Step 3: Cross multiply
    21,888.16x = 30,195.12 × 14,331.16
  4. Step 4: Simplify right side
    21,888.16x = 432,731,095.94
  5. Step 5: Solve for x
    x = 432,731,095.94/21,888.16
  6. Step 6: Final answer
    x = 19,770.10

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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.