Home / 30,239.79-45,367.37-21,372.57

Finding the Fourth Proportional to 30,239.79, 45,367.37 and 21,372.57

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Solution

The fourth proportional to 30,239.79, 45,367.37 and 21,372.57 is: 32,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239.79 : 45,367.37 = 21,372.57 : x
  2. Step 2: Convert to fraction form
    30,239.79/45,367.37 = 21,372.57/x
  3. Step 3: Cross multiply
    30,239.79x = 45,367.37 × 21,372.57
  4. Step 4: Simplify right side
    30,239.79x = 969,617,184.18
  5. Step 5: Solve for x
    x = 969,617,184.18/30,239.79
  6. Step 6: Final answer
    x = 32,064.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.