Home / 19,765.12-29,642.64-8,076.16

Finding the Fourth Proportional to 19,765.12, 29,642.64 and 8,076.16

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Solution

The fourth proportional to 19,765.12, 29,642.64 and 8,076.16 is: 12,112.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.12 : 29,642.64 = 8,076.16 : x
  2. Step 2: Convert to fraction form
    19,765.12/29,642.64 = 8,076.16/x
  3. Step 3: Cross multiply
    19,765.12x = 29,642.64 × 8,076.16
  4. Step 4: Simplify right side
    19,765.12x = 239,398,703.46
  5. Step 5: Solve for x
    x = 239,398,703.46/19,765.12
  6. Step 6: Final answer
    x = 12,112.18

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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.