Home / 13,980.52-20,972.36-4,621.76

Finding the Fourth Proportional to 13,980.52, 20,972.36 and 4,621.76

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Solution

The fourth proportional to 13,980.52, 20,972.36 and 4,621.76 is: 6,933.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.52 : 20,972.36 = 4,621.76 : x
  2. Step 2: Convert to fraction form
    13,980.52/20,972.36 = 4,621.76/x
  3. Step 3: Cross multiply
    13,980.52x = 20,972.36 × 4,621.76
  4. Step 4: Simplify right side
    13,980.52x = 96,929,214.55
  5. Step 5: Solve for x
    x = 96,929,214.55/13,980.52
  6. Step 6: Final answer
    x = 6,933.16

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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.