Home / 28,399.17-39,189.25-15,652.31

Finding the Fourth Proportional to 28,399.17, 39,189.25 and 15,652.31

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Solution

The fourth proportional to 28,399.17, 39,189.25 and 15,652.31 is: 21,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.17 : 39,189.25 = 15,652.31 : x
  2. Step 2: Convert to fraction form
    28,399.17/39,189.25 = 15,652.31/x
  3. Step 3: Cross multiply
    28,399.17x = 39,189.25 × 15,652.31
  4. Step 4: Simplify right side
    28,399.17x = 613,402,289.67
  5. Step 5: Solve for x
    x = 613,402,289.67/28,399.17
  6. Step 6: Final answer
    x = 21,599.30

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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.