Home / 39,395.12-54,366.03-21,490.79

Finding the Fourth Proportional to 39,395.12, 54,366.03 and 21,490.79

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Solution

The fourth proportional to 39,395.12, 54,366.03 and 21,490.79 is: 29,657.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,395.12 : 54,366.03 = 21,490.79 : x
  2. Step 2: Convert to fraction form
    39,395.12/54,366.03 = 21,490.79/x
  3. Step 3: Cross multiply
    39,395.12x = 54,366.03 × 21,490.79
  4. Step 4: Simplify right side
    39,395.12x = 1,168,368,662.03
  5. Step 5: Solve for x
    x = 1,168,368,662.03/39,395.12
  6. Step 6: Final answer
    x = 29,657.70

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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.