Home / 13,215.40-19,823.10-13,010.60

Finding the Fourth Proportional to 13,215.40, 19,823.10 and 13,010.60

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Solution

The fourth proportional to 13,215.40, 19,823.10 and 13,010.60 is: 19,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.40 : 19,823.10 = 13,010.60 : x
  2. Step 2: Convert to fraction form
    13,215.40/19,823.10 = 13,010.60/x
  3. Step 3: Cross multiply
    13,215.40x = 19,823.10 × 13,010.60
  4. Step 4: Simplify right side
    13,215.40x = 257,910,424.86
  5. Step 5: Solve for x
    x = 257,910,424.86/13,215.40
  6. Step 6: Final answer
    x = 19,515.90

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Similar ratio
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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.