Home / 13,515.22-20,275.53-4,748.95

Finding the Fourth Proportional to 13,515.22, 20,275.53 and 4,748.95

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Solution

The fourth proportional to 13,515.22, 20,275.53 and 4,748.95 is: 7,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.22 : 20,275.53 = 4,748.95 : x
  2. Step 2: Convert to fraction form
    13,515.22/20,275.53 = 4,748.95/x
  3. Step 3: Cross multiply
    13,515.22x = 20,275.53 × 4,748.95
  4. Step 4: Simplify right side
    13,515.22x = 96,287,478.19
  5. Step 5: Solve for x
    x = 96,287,478.19/13,515.22
  6. Step 6: Final answer
    x = 7,124.37

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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.