Home / 30,878.64-42,610.08-17,451.36

Finding the Fourth Proportional to 30,878.64, 42,610.08 and 17,451.36

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Solution

The fourth proportional to 30,878.64, 42,610.08 and 17,451.36 is: 24,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,878.64 : 42,610.08 = 17,451.36 : x
  2. Step 2: Convert to fraction form
    30,878.64/42,610.08 = 17,451.36/x
  3. Step 3: Cross multiply
    30,878.64x = 42,610.08 × 17,451.36
  4. Step 4: Simplify right side
    30,878.64x = 743,603,845.71
  5. Step 5: Solve for x
    x = 743,603,845.71/30,878.64
  6. Step 6: Final answer
    x = 24,081.50

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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.