Home / 21,343.40-32,015.10-13,586.60

Finding the Fourth Proportional to 21,343.40, 32,015.10 and 13,586.60

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Solution

The fourth proportional to 21,343.40, 32,015.10 and 13,586.60 is: 20,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.40 : 32,015.10 = 13,586.60 : x
  2. Step 2: Convert to fraction form
    21,343.40/32,015.10 = 13,586.60/x
  3. Step 3: Cross multiply
    21,343.40x = 32,015.10 × 13,586.60
  4. Step 4: Simplify right side
    21,343.40x = 434,976,357.66
  5. Step 5: Solve for x
    x = 434,976,357.66/21,343.40
  6. Step 6: Final answer
    x = 20,379.90

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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.