Home / 28,632.89-39,513.61-15,712.08

Finding the Fourth Proportional to 28,632.89, 39,513.61 and 15,712.08

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Solution

The fourth proportional to 28,632.89, 39,513.61 and 15,712.08 is: 21,682.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,632.89 : 39,513.61 = 15,712.08 : x
  2. Step 2: Convert to fraction form
    28,632.89/39,513.61 = 15,712.08/x
  3. Step 3: Cross multiply
    28,632.89x = 39,513.61 × 15,712.08
  4. Step 4: Simplify right side
    28,632.89x = 620,840,962.13
  5. Step 5: Solve for x
    x = 620,840,962.13/28,632.89
  6. Step 6: Final answer
    x = 21,682.79

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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.