Home / 39,589.87-54,634.03-21,685.17

Finding the Fourth Proportional to 39,589.87, 54,634.03 and 21,685.17

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Solution

The fourth proportional to 39,589.87, 54,634.03 and 21,685.17 is: 29,925.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.87 : 54,634.03 = 21,685.17 : x
  2. Step 2: Convert to fraction form
    39,589.87/54,634.03 = 21,685.17/x
  3. Step 3: Cross multiply
    39,589.87x = 54,634.03 × 21,685.17
  4. Step 4: Simplify right side
    39,589.87x = 1,184,748,228.34
  5. Step 5: Solve for x
    x = 1,184,748,228.34/39,589.87
  6. Step 6: Final answer
    x = 29,925.54

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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.