Home / 19,765.12-27,280.40-12,110.66

Finding the Fourth Proportional to 19,765.12, 27,280.40 and 12,110.66

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Solution

The fourth proportional to 19,765.12, 27,280.40 and 12,110.66 is: 16,715.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.12 : 27,280.40 = 12,110.66 : x
  2. Step 2: Convert to fraction form
    19,765.12/27,280.40 = 12,110.66/x
  3. Step 3: Cross multiply
    19,765.12x = 27,280.40 × 12,110.66
  4. Step 4: Simplify right side
    19,765.12x = 330,383,649.06
  5. Step 5: Solve for x
    x = 330,383,649.06/19,765.12
  6. Step 6: Final answer
    x = 16,715.49

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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.