Home / 39,589.74-54,633.85-21,685.38

Finding the Fourth Proportional to 39,589.74, 54,633.85 and 21,685.38

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Solution

The fourth proportional to 39,589.74, 54,633.85 and 21,685.38 is: 29,925.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.74 : 54,633.85 = 21,685.38 : x
  2. Step 2: Convert to fraction form
    39,589.74/54,633.85 = 21,685.38/x
  3. Step 3: Cross multiply
    39,589.74x = 54,633.85 × 21,685.38
  4. Step 4: Simplify right side
    39,589.74x = 1,184,756,000.00
  5. Step 5: Solve for x
    x = 1,184,756,000.00/39,589.74
  6. Step 6: Final answer
    x = 29,925.84

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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.