Home / 39,435.17-54,420.62-21,530.18

Finding the Fourth Proportional to 39,435.17, 54,420.62 and 21,530.18

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Solution

The fourth proportional to 39,435.17, 54,420.62 and 21,530.18 is: 29,711.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,435.17 : 54,420.62 = 21,530.18 : x
  2. Step 2: Convert to fraction form
    39,435.17/54,420.62 = 21,530.18/x
  3. Step 3: Cross multiply
    39,435.17x = 54,420.62 × 21,530.18
  4. Step 4: Simplify right side
    39,435.17x = 1,171,685,364.56
  5. Step 5: Solve for x
    x = 1,171,685,364.56/39,435.17
  6. Step 6: Final answer
    x = 29,711.69

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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.