Home / 39,193.24-54,087.06-21,288.40

Finding the Fourth Proportional to 39,193.24, 54,087.06 and 21,288.40

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Solution

The fourth proportional to 39,193.24, 54,087.06 and 21,288.40 is: 29,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,193.24 : 54,087.06 = 21,288.40 : x
  2. Step 2: Convert to fraction form
    39,193.24/54,087.06 = 21,288.40/x
  3. Step 3: Cross multiply
    39,193.24x = 54,087.06 × 21,288.40
  4. Step 4: Simplify right side
    39,193.24x = 1,151,426,968.10
  5. Step 5: Solve for x
    x = 1,151,426,968.10/39,193.24
  6. Step 6: Final answer
    x = 29,378.20

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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.