Home / 21,706.40-32,473.20-18,816.80

Finding the Fourth Proportional to 21,706.40, 32,473.20 and 18,816.80

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Solution

The fourth proportional to 21,706.40, 32,473.20 and 18,816.80 is: 28,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706.40 : 32,473.20 = 18,816.80 : x
  2. Step 2: Convert to fraction form
    21,706.40/32,473.20 = 18,816.80/x
  3. Step 3: Cross multiply
    21,706.40x = 32,473.20 × 18,816.80
  4. Step 4: Simplify right side
    21,706.40x = 611,041,709.76
  5. Step 5: Solve for x
    x = 611,041,709.76/21,706.40
  6. Step 6: Final answer
    x = 28,150.30

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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.