Home / 28,894.13-39,873.89-15,646.13

Finding the Fourth Proportional to 28,894.13, 39,873.89 and 15,646.13

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Solution

The fourth proportional to 28,894.13, 39,873.89 and 15,646.13 is: 21,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,894.13 : 39,873.89 = 15,646.13 : x
  2. Step 2: Convert to fraction form
    28,894.13/39,873.89 = 15,646.13/x
  3. Step 3: Cross multiply
    28,894.13x = 39,873.89 × 15,646.13
  4. Step 4: Simplify right side
    28,894.13x = 623,871,906.29
  5. Step 5: Solve for x
    x = 623,871,906.29/28,894.13
  6. Step 6: Final answer
    x = 21,591.65

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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.