Home / 21,114.69-31,660.36-14,458.80

Finding the Fourth Proportional to 21,114.69, 31,660.36 and 14,458.80

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Solution

The fourth proportional to 21,114.69, 31,660.36 and 14,458.80 is: 21,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.69 : 31,660.36 = 14,458.80 : x
  2. Step 2: Convert to fraction form
    21,114.69/31,660.36 = 14,458.80/x
  3. Step 3: Cross multiply
    21,114.69x = 31,660.36 × 14,458.80
  4. Step 4: Simplify right side
    21,114.69x = 457,770,875.41
  5. Step 5: Solve for x
    x = 457,770,875.41/21,114.69
  6. Step 6: Final answer
    x = 21,680.21

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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.