Home / 39,212.40-54,113.64-21,307.74

Finding the Fourth Proportional to 39,212.40, 54,113.64 and 21,307.74

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Solution

The fourth proportional to 39,212.40, 54,113.64 and 21,307.74 is: 29,404.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,212.40 : 54,113.64 = 21,307.74 : x
  2. Step 2: Convert to fraction form
    39,212.40/54,113.64 = 21,307.74/x
  3. Step 3: Cross multiply
    39,212.40x = 54,113.64 × 21,307.74
  4. Step 4: Simplify right side
    39,212.40x = 1,153,039,371.57
  5. Step 5: Solve for x
    x = 1,153,039,371.57/39,212.40
  6. Step 6: Final answer
    x = 29,404.97

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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.