Home / 28,863.78-43,215.75-15,686.34

Finding the Fourth Proportional to 28,863.78, 43,215.75 and 15,686.34

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Solution

The fourth proportional to 28,863.78, 43,215.75 and 15,686.34 is: 23,486.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,863.78 : 43,215.75 = 15,686.34 : x
  2. Step 2: Convert to fraction form
    28,863.78/43,215.75 = 15,686.34/x
  3. Step 3: Cross multiply
    28,863.78x = 43,215.75 × 15,686.34
  4. Step 4: Simplify right side
    28,863.78x = 677,896,947.86
  5. Step 5: Solve for x
    x = 677,896,947.86/28,863.78
  6. Step 6: Final answer
    x = 23,486.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.