Home / 39,223.66-54,129.07-21,318.67

Finding the Fourth Proportional to 39,223.66, 54,129.07 and 21,318.67

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Solution

The fourth proportional to 39,223.66, 54,129.07 and 21,318.67 is: 29,419.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,223.66 : 54,129.07 = 21,318.67 : x
  2. Step 2: Convert to fraction form
    39,223.66/54,129.07 = 21,318.67/x
  3. Step 3: Cross multiply
    39,223.66x = 54,129.07 × 21,318.67
  4. Step 4: Simplify right side
    39,223.66x = 1,153,959,403.50
  5. Step 5: Solve for x
    x = 1,153,959,403.50/39,223.66
  6. Step 6: Final answer
    x = 29,419.99

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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.