Home / 39,303.87-54,239.01-21,398.85

Finding the Fourth Proportional to 39,303.87, 54,239.01 and 21,398.85

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Solution

The fourth proportional to 39,303.87, 54,239.01 and 21,398.85 is: 29,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,303.87 : 54,239.01 = 21,398.85 : x
  2. Step 2: Convert to fraction form
    39,303.87/54,239.01 = 21,398.85/x
  3. Step 3: Cross multiply
    39,303.87x = 54,239.01 × 21,398.85
  4. Step 4: Simplify right side
    39,303.87x = 1,160,652,439.14
  5. Step 5: Solve for x
    x = 1,160,652,439.14/39,303.87
  6. Step 6: Final answer
    x = 29,530.23

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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.