Home / 39,333.54-54,280.18-21,428.69

Finding the Fourth Proportional to 39,333.54, 54,280.18 and 21,428.69

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Solution

The fourth proportional to 39,333.54, 54,280.18 and 21,428.69 is: 29,571.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,333.54 : 54,280.18 = 21,428.69 : x
  2. Step 2: Convert to fraction form
    39,333.54/54,280.18 = 21,428.69/x
  3. Step 3: Cross multiply
    39,333.54x = 54,280.18 × 21,428.69
  4. Step 4: Simplify right side
    39,333.54x = 1,163,153,150.36
  5. Step 5: Solve for x
    x = 1,163,153,150.36/39,333.54
  6. Step 6: Final answer
    x = 29,571.53

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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.