Home / 39,557.79-54,589.71-21,652.64

Finding the Fourth Proportional to 39,557.79, 54,589.71 and 21,652.64

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Solution

The fourth proportional to 39,557.79, 54,589.71 and 21,652.64 is: 29,880.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,557.79 : 54,589.71 = 21,652.64 : x
  2. Step 2: Convert to fraction form
    39,557.79/54,589.71 = 21,652.64/x
  3. Step 3: Cross multiply
    39,557.79x = 54,589.71 × 21,652.64
  4. Step 4: Simplify right side
    39,557.79x = 1,182,011,065.39
  5. Step 5: Solve for x
    x = 1,182,011,065.39/39,557.79
  6. Step 6: Final answer
    x = 29,880.61

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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.