Home / 38,561.15-53,214.01-21,565.20

Finding the Fourth Proportional to 38,561.15, 53,214.01 and 21,565.20

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Solution

The fourth proportional to 38,561.15, 53,214.01 and 21,565.20 is: 29,759.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,561.15 : 53,214.01 = 21,565.20 : x
  2. Step 2: Convert to fraction form
    38,561.15/53,214.01 = 21,565.20/x
  3. Step 3: Cross multiply
    38,561.15x = 53,214.01 × 21,565.20
  4. Step 4: Simplify right side
    38,561.15x = 1,147,570,768.45
  5. Step 5: Solve for x
    x = 1,147,570,768.45/38,561.15
  6. Step 6: Final answer
    x = 29,759.77

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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.