Home / 19,770.48-29,611.98-13,515.66

Finding the Fourth Proportional to 19,770.48, 29,611.98 and 13,515.66

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Solution

The fourth proportional to 19,770.48, 29,611.98 and 13,515.66 is: 20,243.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.48 : 29,611.98 = 13,515.66 : x
  2. Step 2: Convert to fraction form
    19,770.48/29,611.98 = 13,515.66/x
  3. Step 3: Cross multiply
    19,770.48x = 29,611.98 × 13,515.66
  4. Step 4: Simplify right side
    19,770.48x = 400,225,453.61
  5. Step 5: Solve for x
    x = 400,225,453.61/19,770.48
  6. Step 6: Final answer
    x = 20,243.59

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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.