Home / 39,395.64-54,366.70-21,491.28

Finding the Fourth Proportional to 39,395.64, 54,366.70 and 21,491.28

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Solution

The fourth proportional to 39,395.64, 54,366.70 and 21,491.28 is: 29,658.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,395.64 : 54,366.70 = 21,491.28 : x
  2. Step 2: Convert to fraction form
    39,395.64/54,366.70 = 21,491.28/x
  3. Step 3: Cross multiply
    39,395.64x = 54,366.70 × 21,491.28
  4. Step 4: Simplify right side
    39,395.64x = 1,168,409,972.38
  5. Step 5: Solve for x
    x = 1,168,409,972.38/39,395.64
  6. Step 6: Final answer
    x = 29,658.36

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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.