Home / 39,212.20-54,113.06-21,307.35

Finding the Fourth Proportional to 39,212.20, 54,113.06 and 21,307.35

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Solution

The fourth proportional to 39,212.20, 54,113.06 and 21,307.35 is: 29,404.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,212.20 : 54,113.06 = 21,307.35 : x
  2. Step 2: Convert to fraction form
    39,212.20/54,113.06 = 21,307.35/x
  3. Step 3: Cross multiply
    39,212.20x = 54,113.06 × 21,307.35
  4. Step 4: Simplify right side
    39,212.20x = 1,153,006,165.18
  5. Step 5: Solve for x
    x = 1,153,006,165.18/39,212.20
  6. Step 6: Final answer
    x = 29,404.27

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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.