Home / 15,772.32-21,765.54-8,699.22

Finding the Fourth Proportional to 15,772.32, 21,765.54 and 8,699.22

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Solution

The fourth proportional to 15,772.32, 21,765.54 and 8,699.22 is: 12,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.32 : 21,765.54 = 8,699.22 : x
  2. Step 2: Convert to fraction form
    15,772.32/21,765.54 = 8,699.22/x
  3. Step 3: Cross multiply
    15,772.32x = 21,765.54 × 8,699.22
  4. Step 4: Simplify right side
    15,772.32x = 189,343,220.88
  5. Step 5: Solve for x
    x = 189,343,220.88/15,772.32
  6. Step 6: Final answer
    x = 12,004.78

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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.