Home / 18,901.82-26,080.07-15,888.40

Finding the Fourth Proportional to 18,901.82, 26,080.07 and 15,888.40

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Solution

The fourth proportional to 18,901.82, 26,080.07 and 15,888.40 is: 21,922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.82 : 26,080.07 = 15,888.40 : x
  2. Step 2: Convert to fraction form
    18,901.82/26,080.07 = 15,888.40/x
  3. Step 3: Cross multiply
    18,901.82x = 26,080.07 × 15,888.40
  4. Step 4: Simplify right side
    18,901.82x = 414,370,439.55
  5. Step 5: Solve for x
    x = 414,370,439.55/18,901.82
  6. Step 6: Final answer
    x = 21,922.25

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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.