Home / 39,719.34-54,811.62-21,814.20

Finding the Fourth Proportional to 39,719.34, 54,811.62 and 21,814.20

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Solution

The fourth proportional to 39,719.34, 54,811.62 and 21,814.20 is: 30,103.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.34 : 54,811.62 = 21,814.20 : x
  2. Step 2: Convert to fraction form
    39,719.34/54,811.62 = 21,814.20/x
  3. Step 3: Cross multiply
    39,719.34x = 54,811.62 × 21,814.20
  4. Step 4: Simplify right side
    39,719.34x = 1,195,671,641.00
  5. Step 5: Solve for x
    x = 1,195,671,641.00/39,719.34
  6. Step 6: Final answer
    x = 30,103.01

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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.