Home / 28,110.12-38,789.64-15,534.84

Finding the Fourth Proportional to 28,110.12, 38,789.64 and 15,534.84

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Solution

The fourth proportional to 28,110.12, 38,789.64 and 15,534.84 is: 21,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.12 : 38,789.64 = 15,534.84 : x
  2. Step 2: Convert to fraction form
    28,110.12/38,789.64 = 15,534.84/x
  3. Step 3: Cross multiply
    28,110.12x = 38,789.64 × 15,534.84
  4. Step 4: Simplify right side
    28,110.12x = 602,590,851.06
  5. Step 5: Solve for x
    x = 602,590,851.06/28,110.12
  6. Step 6: Final answer
    x = 21,436.79

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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.