Home / 30,732.60-42,388.36-21,175.68

Finding the Fourth Proportional to 30,732.60, 42,388.36 and 21,175.68

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Solution

The fourth proportional to 30,732.60, 42,388.36 and 21,175.68 is: 29,206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,732.60 : 42,388.36 = 21,175.68 : x
  2. Step 2: Convert to fraction form
    30,732.60/42,388.36 = 21,175.68/x
  3. Step 3: Cross multiply
    30,732.60x = 42,388.36 × 21,175.68
  4. Step 4: Simplify right side
    30,732.60x = 897,602,347.08
  5. Step 5: Solve for x
    x = 897,602,347.08/30,732.60
  6. Step 6: Final answer
    x = 29,206.85

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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.