Home / 13,954.24-20,931.36-4,720

Finding the Fourth Proportional to 13,954.24, 20,931.36 and 4,720

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Solution

The fourth proportional to 13,954.24, 20,931.36 and 4,720 is: 7,080

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.24 : 20,931.36 = 4,720 : x
  2. Step 2: Convert to fraction form
    13,954.24/20,931.36 = 4,720/x
  3. Step 3: Cross multiply
    13,954.24x = 20,931.36 × 4,720
  4. Step 4: Simplify right side
    13,954.24x = 98,796,019.20
  5. Step 5: Solve for x
    x = 98,796,019.20/13,954.24
  6. Step 6: Final answer
    x = 7,080

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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.