Home / 30,961.44-42,726.96-18,385.92

Finding the Fourth Proportional to 30,961.44, 42,726.96 and 18,385.92

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Solution

The fourth proportional to 30,961.44, 42,726.96 and 18,385.92 is: 25,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,961.44 : 42,726.96 = 18,385.92 : x
  2. Step 2: Convert to fraction form
    30,961.44/42,726.96 = 18,385.92/x
  3. Step 3: Cross multiply
    30,961.44x = 42,726.96 × 18,385.92
  4. Step 4: Simplify right side
    30,961.44x = 785,574,468.40
  5. Step 5: Solve for x
    x = 785,574,468.40/30,961.44
  6. Step 6: Final answer
    x = 25,372.67

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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.