Home / 39,410.27-54,386.31-21,505.67

Finding the Fourth Proportional to 39,410.27, 54,386.31 and 21,505.67

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Solution

The fourth proportional to 39,410.27, 54,386.31 and 21,505.67 is: 29,677.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,410.27 : 54,386.31 = 21,505.67 : x
  2. Step 2: Convert to fraction form
    39,410.27/54,386.31 = 21,505.67/x
  3. Step 3: Cross multiply
    39,410.27x = 54,386.31 × 21,505.67
  4. Step 4: Simplify right side
    39,410.27x = 1,169,614,035.38
  5. Step 5: Solve for x
    x = 1,169,614,035.38/39,410.27
  6. Step 6: Final answer
    x = 29,677.90

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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.