Home / 38,851.32-53,609.78-21,854.99

Finding the Fourth Proportional to 38,851.32, 53,609.78 and 21,854.99

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Solution

The fourth proportional to 38,851.32, 53,609.78 and 21,854.99 is: 30,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,851.32 : 53,609.78 = 21,854.99 : x
  2. Step 2: Convert to fraction form
    38,851.32/53,609.78 = 21,854.99/x
  3. Step 3: Cross multiply
    38,851.32x = 53,609.78 × 21,854.99
  4. Step 4: Simplify right side
    38,851.32x = 1,171,641,394.46
  5. Step 5: Solve for x
    x = 1,171,641,394.46/38,851.32
  6. Step 6: Final answer
    x = 30,157.05

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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.