Home / 30,910.08-42,643.83-20,167.59

Finding the Fourth Proportional to 30,910.08, 42,643.83 and 20,167.59

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Solution

The fourth proportional to 30,910.08, 42,643.83 and 20,167.59 is: 27,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,910.08 : 42,643.83 = 20,167.59 : x
  2. Step 2: Convert to fraction form
    30,910.08/42,643.83 = 20,167.59/x
  3. Step 3: Cross multiply
    30,910.08x = 42,643.83 × 20,167.59
  4. Step 4: Simplify right side
    30,910.08x = 860,023,279.47
  5. Step 5: Solve for x
    x = 860,023,279.47/30,910.08
  6. Step 6: Final answer
    x = 27,823.39

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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.