Home / 38,128.62-52,617.63-21,361.50

Finding the Fourth Proportional to 38,128.62, 52,617.63 and 21,361.50

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Solution

The fourth proportional to 38,128.62, 52,617.63 and 21,361.50 is: 29,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,128.62 : 52,617.63 = 21,361.50 : x
  2. Step 2: Convert to fraction form
    38,128.62/52,617.63 = 21,361.50/x
  3. Step 3: Cross multiply
    38,128.62x = 52,617.63 × 21,361.50
  4. Step 4: Simplify right side
    38,128.62x = 1,123,991,503.25
  5. Step 5: Solve for x
    x = 1,123,991,503.25/38,128.62
  6. Step 6: Final answer
    x = 29,478.95

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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.