Home / 13,420.13-20,127.46-5,097.23

Finding the Fourth Proportional to 13,420.13, 20,127.46 and 5,097.23

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Solution

The fourth proportional to 13,420.13, 20,127.46 and 5,097.23 is: 7,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.13 : 20,127.46 = 5,097.23 : x
  2. Step 2: Convert to fraction form
    13,420.13/20,127.46 = 5,097.23/x
  3. Step 3: Cross multiply
    13,420.13x = 20,127.46 × 5,097.23
  4. Step 4: Simplify right side
    13,420.13x = 102,594,166.81
  5. Step 5: Solve for x
    x = 102,594,166.81/13,420.13
  6. Step 6: Final answer
    x = 7,644.80

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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.