Home / 39,311.77-54,251.58-21,407.08

Finding the Fourth Proportional to 39,311.77, 54,251.58 and 21,407.08

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Solution

The fourth proportional to 39,311.77, 54,251.58 and 21,407.08 is: 29,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311.77 : 54,251.58 = 21,407.08 : x
  2. Step 2: Convert to fraction form
    39,311.77/54,251.58 = 21,407.08/x
  3. Step 3: Cross multiply
    39,311.77x = 54,251.58 × 21,407.08
  4. Step 4: Simplify right side
    39,311.77x = 1,161,367,913.19
  5. Step 5: Solve for x
    x = 1,161,367,913.19/39,311.77
  6. Step 6: Final answer
    x = 29,542.50

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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.