Home / 15,645.20-23,467.80-7,851.20

Finding the Fourth Proportional to 15,645.20, 23,467.80 and 7,851.20

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Solution

The fourth proportional to 15,645.20, 23,467.80 and 7,851.20 is: 11,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.20 : 23,467.80 = 7,851.20 : x
  2. Step 2: Convert to fraction form
    15,645.20/23,467.80 = 7,851.20/x
  3. Step 3: Cross multiply
    15,645.20x = 23,467.80 × 7,851.20
  4. Step 4: Simplify right side
    15,645.20x = 184,250,391.36
  5. Step 5: Solve for x
    x = 184,250,391.36/15,645.20
  6. Step 6: Final answer
    x = 11,776.80

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1.5x scale

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.