Home / 12,451.01-18,630.36-9,978.32

Finding the Fourth Proportional to 12,451.01, 18,630.36 and 9,978.32

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Solution

The fourth proportional to 12,451.01, 18,630.36 and 9,978.32 is: 14,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.01 : 18,630.36 = 9,978.32 : x
  2. Step 2: Convert to fraction form
    12,451.01/18,630.36 = 9,978.32/x
  3. Step 3: Cross multiply
    12,451.01x = 18,630.36 × 9,978.32
  4. Step 4: Simplify right side
    12,451.01x = 185,899,600.64
  5. Step 5: Solve for x
    x = 185,899,600.64/12,451.01
  6. Step 6: Final answer
    x = 14,930.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.