Home / 39,311.93-54,248.74-21,405.87

Finding the Fourth Proportional to 39,311.93, 54,248.74 and 21,405.87

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Solution

The fourth proportional to 39,311.93, 54,248.74 and 21,405.87 is: 29,539.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311.93 : 54,248.74 = 21,405.87 : x
  2. Step 2: Convert to fraction form
    39,311.93/54,248.74 = 21,405.87/x
  3. Step 3: Cross multiply
    39,311.93x = 54,248.74 × 21,405.87
  4. Step 4: Simplify right side
    39,311.93x = 1,161,241,422.59
  5. Step 5: Solve for x
    x = 1,161,241,422.59/39,311.93
  6. Step 6: Final answer
    x = 29,539.16

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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.