Home / 21,384.80-32,084.32-13,478.19

Finding the Fourth Proportional to 21,384.80, 32,084.32 and 13,478.19

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Solution

The fourth proportional to 21,384.80, 32,084.32 and 13,478.19 is: 20,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.80 : 32,084.32 = 13,478.19 : x
  2. Step 2: Convert to fraction form
    21,384.80/32,084.32 = 13,478.19/x
  3. Step 3: Cross multiply
    21,384.80x = 32,084.32 × 13,478.19
  4. Step 4: Simplify right side
    21,384.80x = 432,438,560.98
  5. Step 5: Solve for x
    x = 432,438,560.98/21,384.80
  6. Step 6: Final answer
    x = 20,221.77

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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.