Home / 39,317.28-54,257.85-21,412.28

Finding the Fourth Proportional to 39,317.28, 54,257.85 and 21,412.28

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Solution

The fourth proportional to 39,317.28, 54,257.85 and 21,412.28 is: 29,548.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,317.28 : 54,257.85 = 21,412.28 : x
  2. Step 2: Convert to fraction form
    39,317.28/54,257.85 = 21,412.28/x
  3. Step 3: Cross multiply
    39,317.28x = 54,257.85 × 21,412.28
  4. Step 4: Simplify right side
    39,317.28x = 1,161,784,276.40
  5. Step 5: Solve for x
    x = 1,161,784,276.40/39,317.28
  6. Step 6: Final answer
    x = 29,548.95

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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.