Home / 21,611.81-32,430.48-9,131.03

Finding the Fourth Proportional to 21,611.81, 32,430.48 and 9,131.03

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Solution

The fourth proportional to 21,611.81, 32,430.48 and 9,131.03 is: 13,701.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.81 : 32,430.48 = 9,131.03 : x
  2. Step 2: Convert to fraction form
    21,611.81/32,430.48 = 9,131.03/x
  3. Step 3: Cross multiply
    21,611.81x = 32,430.48 × 9,131.03
  4. Step 4: Simplify right side
    21,611.81x = 296,123,766.87
  5. Step 5: Solve for x
    x = 296,123,766.87/21,611.81
  6. Step 6: Final answer
    x = 13,701.94

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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.