Home / 21,778.80-32,639.04-10,668.48

Finding the Fourth Proportional to 21,778.80, 32,639.04 and 10,668.48

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Solution

The fourth proportional to 21,778.80, 32,639.04 and 10,668.48 is: 15,988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.80 : 32,639.04 = 10,668.48 : x
  2. Step 2: Convert to fraction form
    21,778.80/32,639.04 = 10,668.48/x
  3. Step 3: Cross multiply
    21,778.80x = 32,639.04 × 10,668.48
  4. Step 4: Simplify right side
    21,778.80x = 348,208,945.46
  5. Step 5: Solve for x
    x = 348,208,945.46/21,778.80
  6. Step 6: Final answer
    x = 15,988.44

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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.