Home / 28,083.15-38,754.75-15,507.90

Finding the Fourth Proportional to 28,083.15, 38,754.75 and 15,507.90

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Solution

The fourth proportional to 28,083.15, 38,754.75 and 15,507.90 is: 21,400.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.15 : 38,754.75 = 15,507.90 : x
  2. Step 2: Convert to fraction form
    28,083.15/38,754.75 = 15,507.90/x
  3. Step 3: Cross multiply
    28,083.15x = 38,754.75 × 15,507.90
  4. Step 4: Simplify right side
    28,083.15x = 601,004,787.53
  5. Step 5: Solve for x
    x = 601,004,787.53/28,083.15
  6. Step 6: Final answer
    x = 21,400.90

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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.