Home / 39,339.96-54,288.46-21,435.11

Finding the Fourth Proportional to 39,339.96, 54,288.46 and 21,435.11

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Solution

The fourth proportional to 39,339.96, 54,288.46 and 21,435.11 is: 29,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.96 : 54,288.46 = 21,435.11 : x
  2. Step 2: Convert to fraction form
    39,339.96/54,288.46 = 21,435.11/x
  3. Step 3: Cross multiply
    39,339.96x = 54,288.46 × 21,435.11
  4. Step 4: Simplify right side
    39,339.96x = 1,163,679,274.35
  5. Step 5: Solve for x
    x = 1,163,679,274.35/39,339.96
  6. Step 6: Final answer
    x = 29,580.08

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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.