Home / 15,210.57-20,989.21-8,495.26

Finding the Fourth Proportional to 15,210.57, 20,989.21 and 8,495.26

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Solution

The fourth proportional to 15,210.57, 20,989.21 and 8,495.26 is: 11,722.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.57 : 20,989.21 = 8,495.26 : x
  2. Step 2: Convert to fraction form
    15,210.57/20,989.21 = 8,495.26/x
  3. Step 3: Cross multiply
    15,210.57x = 20,989.21 × 8,495.26
  4. Step 4: Simplify right side
    15,210.57x = 178,308,796.14
  5. Step 5: Solve for x
    x = 178,308,796.14/15,210.57
  6. Step 6: Final answer
    x = 11,722.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.