Home / 28,286.72-39,055.20-17,681.12

Finding the Fourth Proportional to 28,286.72, 39,055.20 and 17,681.12

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Solution

The fourth proportional to 28,286.72, 39,055.20 and 17,681.12 is: 24,412.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.72 : 39,055.20 = 17,681.12 : x
  2. Step 2: Convert to fraction form
    28,286.72/39,055.20 = 17,681.12/x
  3. Step 3: Cross multiply
    28,286.72x = 39,055.20 × 17,681.12
  4. Step 4: Simplify right side
    28,286.72x = 690,539,677.82
  5. Step 5: Solve for x
    x = 690,539,677.82/28,286.72
  6. Step 6: Final answer
    x = 24,412.15

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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.