Home / 28,603.91-39,471.40-15,856.97

Finding the Fourth Proportional to 28,603.91, 39,471.40 and 15,856.97

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Solution

The fourth proportional to 28,603.91, 39,471.40 and 15,856.97 is: 21,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.91 : 39,471.40 = 15,856.97 : x
  2. Step 2: Convert to fraction form
    28,603.91/39,471.40 = 15,856.97/x
  3. Step 3: Cross multiply
    28,603.91x = 39,471.40 × 15,856.97
  4. Step 4: Simplify right side
    28,603.91x = 625,896,805.66
  5. Step 5: Solve for x
    x = 625,896,805.66/28,603.91
  6. Step 6: Final answer
    x = 21,881.51

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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.