Home / 39,595.64-54,642.07-21,690.72

Finding the Fourth Proportional to 39,595.64, 54,642.07 and 21,690.72

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Solution

The fourth proportional to 39,595.64, 54,642.07 and 21,690.72 is: 29,933.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,595.64 : 54,642.07 = 21,690.72 : x
  2. Step 2: Convert to fraction form
    39,595.64/54,642.07 = 21,690.72/x
  3. Step 3: Cross multiply
    39,595.64x = 54,642.07 × 21,690.72
  4. Step 4: Simplify right side
    39,595.64x = 1,185,225,840.59
  5. Step 5: Solve for x
    x = 1,185,225,840.59/39,595.64
  6. Step 6: Final answer
    x = 29,933.24

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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.