Home / 28,535.31-39,377.97-15,788.16

Finding the Fourth Proportional to 28,535.31, 39,377.97 and 15,788.16

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Solution

The fourth proportional to 28,535.31, 39,377.97 and 15,788.16 is: 21,787.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.31 : 39,377.97 = 15,788.16 : x
  2. Step 2: Convert to fraction form
    28,535.31/39,377.97 = 15,788.16/x
  3. Step 3: Cross multiply
    28,535.31x = 39,377.97 × 15,788.16
  4. Step 4: Simplify right side
    28,535.31x = 621,705,690.84
  5. Step 5: Solve for x
    x = 621,705,690.84/28,535.31
  6. Step 6: Final answer
    x = 21,787.24

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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.