Home / 39,212.42-54,113.64-21,307.70

Finding the Fourth Proportional to 39,212.42, 54,113.64 and 21,307.70

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Solution

The fourth proportional to 39,212.42, 54,113.64 and 21,307.70 is: 29,404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,212.42 : 54,113.64 = 21,307.70 : x
  2. Step 2: Convert to fraction form
    39,212.42/54,113.64 = 21,307.70/x
  3. Step 3: Cross multiply
    39,212.42x = 54,113.64 × 21,307.70
  4. Step 4: Simplify right side
    39,212.42x = 1,153,037,207.03
  5. Step 5: Solve for x
    x = 1,153,037,207.03/39,212.42
  6. Step 6: Final answer
    x = 29,404.90

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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.