Home / 28,103.09-38,782.19-15,527.75

Finding the Fourth Proportional to 28,103.09, 38,782.19 and 15,527.75

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Solution

The fourth proportional to 28,103.09, 38,782.19 and 15,527.75 is: 21,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.09 : 38,782.19 = 15,527.75 : x
  2. Step 2: Convert to fraction form
    28,103.09/38,782.19 = 15,527.75/x
  3. Step 3: Cross multiply
    28,103.09x = 38,782.19 × 15,527.75
  4. Step 4: Simplify right side
    28,103.09x = 602,200,073.13
  5. Step 5: Solve for x
    x = 602,200,073.13/28,103.09
  6. Step 6: Final answer
    x = 21,428.25

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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.