Home / 21,888.80-30,186.04-17,427.28

Finding the Fourth Proportional to 21,888.80, 30,186.04 and 17,427.28

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Solution

The fourth proportional to 21,888.80, 30,186.04 and 17,427.28 is: 24,033.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.80 : 30,186.04 = 17,427.28 : x
  2. Step 2: Convert to fraction form
    21,888.80/30,186.04 = 17,427.28/x
  3. Step 3: Cross multiply
    21,888.80x = 30,186.04 × 17,427.28
  4. Step 4: Simplify right side
    21,888.80x = 526,060,571.17
  5. Step 5: Solve for x
    x = 526,060,571.17/21,888.80
  6. Step 6: Final answer
    x = 24,033.32

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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.