Home / 30,071.52-45,100.02-12,531.78

Finding the Fourth Proportional to 30,071.52, 45,100.02 and 12,531.78

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Solution

The fourth proportional to 30,071.52, 45,100.02 and 12,531.78 is: 18,794.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,071.52 : 45,100.02 = 12,531.78 : x
  2. Step 2: Convert to fraction form
    30,071.52/45,100.02 = 12,531.78/x
  3. Step 3: Cross multiply
    30,071.52x = 45,100.02 × 12,531.78
  4. Step 4: Simplify right side
    30,071.52x = 565,183,528.64
  5. Step 5: Solve for x
    x = 565,183,528.64/30,071.52
  6. Step 6: Final answer
    x = 18,794.64

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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.