Home / 15,832.80-23,720.40-12,895.20

Finding the Fourth Proportional to 15,832.80, 23,720.40 and 12,895.20

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Solution

The fourth proportional to 15,832.80, 23,720.40 and 12,895.20 is: 19,319.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,832.80 : 23,720.40 = 12,895.20 : x
  2. Step 2: Convert to fraction form
    15,832.80/23,720.40 = 12,895.20/x
  3. Step 3: Cross multiply
    15,832.80x = 23,720.40 × 12,895.20
  4. Step 4: Simplify right side
    15,832.80x = 305,879,302.08
  5. Step 5: Solve for x
    x = 305,879,302.08/15,832.80
  6. Step 6: Final answer
    x = 19,319.34

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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.