Home / 28,776.27-39,712.34-15,856.08

Finding the Fourth Proportional to 28,776.27, 39,712.34 and 15,856.08

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Solution

The fourth proportional to 28,776.27, 39,712.34 and 15,856.08 is: 21,881.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,776.27 : 39,712.34 = 15,856.08 : x
  2. Step 2: Convert to fraction form
    28,776.27/39,712.34 = 15,856.08/x
  3. Step 3: Cross multiply
    28,776.27x = 39,712.34 × 15,856.08
  4. Step 4: Simplify right side
    28,776.27x = 629,681,960.75
  5. Step 5: Solve for x
    x = 629,681,960.75/28,776.27
  6. Step 6: Final answer
    x = 21,881.99

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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.