Home / 28,402.56-39,195.81-15,656.25

Finding the Fourth Proportional to 28,402.56, 39,195.81 and 15,656.25

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Solution

The fourth proportional to 28,402.56, 39,195.81 and 15,656.25 is: 21,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.56 : 39,195.81 = 15,656.25 : x
  2. Step 2: Convert to fraction form
    28,402.56/39,195.81 = 15,656.25/x
  3. Step 3: Cross multiply
    28,402.56x = 39,195.81 × 15,656.25
  4. Step 4: Simplify right side
    28,402.56x = 613,659,204.33
  5. Step 5: Solve for x
    x = 613,659,204.33/28,402.56
  6. Step 6: Final answer
    x = 21,605.77

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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.