Home / 39,417.84-54,396.18-21,512.70

Finding the Fourth Proportional to 39,417.84, 54,396.18 and 21,512.70

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Solution

The fourth proportional to 39,417.84, 54,396.18 and 21,512.70 is: 29,687.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.84 : 54,396.18 = 21,512.70 : x
  2. Step 2: Convert to fraction form
    39,417.84/54,396.18 = 21,512.70/x
  3. Step 3: Cross multiply
    39,417.84x = 54,396.18 × 21,512.70
  4. Step 4: Simplify right side
    39,417.84x = 1,170,208,701.49
  5. Step 5: Solve for x
    x = 1,170,208,701.49/39,417.84
  6. Step 6: Final answer
    x = 29,687.29

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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.