Home / 39,218.54-54,119.34-21,313.40

Finding the Fourth Proportional to 39,218.54, 54,119.34 and 21,313.40

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Solution

The fourth proportional to 39,218.54, 54,119.34 and 21,313.40 is: 29,411.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,218.54 : 54,119.34 = 21,313.40 : x
  2. Step 2: Convert to fraction form
    39,218.54/54,119.34 = 21,313.40/x
  3. Step 3: Cross multiply
    39,218.54x = 54,119.34 × 21,313.40
  4. Step 4: Simplify right side
    39,218.54x = 1,153,466,870.56
  5. Step 5: Solve for x
    x = 1,153,466,870.56/39,218.54
  6. Step 6: Final answer
    x = 29,411.27

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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.