Home / 30,451.50-42,027.12-17,876.25

Finding the Fourth Proportional to 30,451.50, 42,027.12 and 17,876.25

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Solution

The fourth proportional to 30,451.50, 42,027.12 and 17,876.25 is: 24,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,451.50 : 42,027.12 = 17,876.25 : x
  2. Step 2: Convert to fraction form
    30,451.50/42,027.12 = 17,876.25/x
  3. Step 3: Cross multiply
    30,451.50x = 42,027.12 × 17,876.25
  4. Step 4: Simplify right side
    30,451.50x = 751,287,303.90
  5. Step 5: Solve for x
    x = 751,287,303.90/30,451.50
  6. Step 6: Final answer
    x = 24,671.60

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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.