Home / 39,515.40-54,529.56-21,611.07

Finding the Fourth Proportional to 39,515.40, 54,529.56 and 21,611.07

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Solution

The fourth proportional to 39,515.40, 54,529.56 and 21,611.07 is: 29,822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,515.40 : 54,529.56 = 21,611.07 : x
  2. Step 2: Convert to fraction form
    39,515.40/54,529.56 = 21,611.07/x
  3. Step 3: Cross multiply
    39,515.40x = 54,529.56 × 21,611.07
  4. Step 4: Simplify right side
    39,515.40x = 1,178,442,138.23
  5. Step 5: Solve for x
    x = 1,178,442,138.23/39,515.40
  6. Step 6: Final answer
    x = 29,822.35

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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.