Home / 28,579.40-39,439.13-15,832.54

Finding the Fourth Proportional to 28,579.40, 39,439.13 and 15,832.54

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Solution

The fourth proportional to 28,579.40, 39,439.13 and 15,832.54 is: 21,848.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.40 : 39,439.13 = 15,832.54 : x
  2. Step 2: Convert to fraction form
    28,579.40/39,439.13 = 15,832.54/x
  3. Step 3: Cross multiply
    28,579.40x = 39,439.13 × 15,832.54
  4. Step 4: Simplify right side
    28,579.40x = 624,421,603.29
  5. Step 5: Solve for x
    x = 624,421,603.29/28,579.40
  6. Step 6: Final answer
    x = 21,848.66

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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.