Home / 30,533.12-42,144-17,961.92

Finding the Fourth Proportional to 30,533.12, 42,144 and 17,961.92

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Solution

The fourth proportional to 30,533.12, 42,144 and 17,961.92 is: 24,792.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,533.12 : 42,144 = 17,961.92 : x
  2. Step 2: Convert to fraction form
    30,533.12/42,144 = 17,961.92/x
  3. Step 3: Cross multiply
    30,533.12x = 42,144 × 17,961.92
  4. Step 4: Simplify right side
    30,533.12x = 756,987,156.48
  5. Step 5: Solve for x
    x = 756,987,156.48/30,533.12
  6. Step 6: Final answer
    x = 24,792.33

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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.