Home / 38,561.95-53,218.20-21,567.78

Finding the Fourth Proportional to 38,561.95, 53,218.20 and 21,567.78

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Solution

The fourth proportional to 38,561.95, 53,218.20 and 21,567.78 is: 29,765.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,561.95 : 53,218.20 = 21,567.78 : x
  2. Step 2: Convert to fraction form
    38,561.95/53,218.20 = 21,567.78/x
  3. Step 3: Cross multiply
    38,561.95x = 53,218.20 × 21,567.78
  4. Step 4: Simplify right side
    38,561.95x = 1,147,798,163.51
  5. Step 5: Solve for x
    x = 1,147,798,163.51/38,561.95
  6. Step 6: Final answer
    x = 29,765.04

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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.