Home / 28,579.10-39,439.15-15,833.11

Finding the Fourth Proportional to 28,579.10, 39,439.15 and 15,833.11

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Solution

The fourth proportional to 28,579.10, 39,439.15 and 15,833.11 is: 21,849.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.10 : 39,439.15 = 15,833.11 : x
  2. Step 2: Convert to fraction form
    28,579.10/39,439.15 = 15,833.11/x
  3. Step 3: Cross multiply
    28,579.10x = 39,439.15 × 15,833.11
  4. Step 4: Simplify right side
    28,579.10x = 624,444,429.76
  5. Step 5: Solve for x
    x = 624,444,429.76/28,579.10
  6. Step 6: Final answer
    x = 21,849.69

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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.