Home / 13,210.20-19,808.90-7,360.60

Finding the Fourth Proportional to 13,210.20, 19,808.90 and 7,360.60

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Solution

The fourth proportional to 13,210.20, 19,808.90 and 7,360.60 is: 11,037.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.20 : 19,808.90 = 7,360.60 : x
  2. Step 2: Convert to fraction form
    13,210.20/19,808.90 = 7,360.60/x
  3. Step 3: Cross multiply
    13,210.20x = 19,808.90 × 7,360.60
  4. Step 4: Simplify right side
    13,210.20x = 145,805,389.34
  5. Step 5: Solve for x
    x = 145,805,389.34/13,210.20
  6. Step 6: Final answer
    x = 11,037.33

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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.