Home / 21,776.08-32,678.64-13,990.48

Finding the Fourth Proportional to 21,776.08, 32,678.64 and 13,990.48

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Solution

The fourth proportional to 21,776.08, 32,678.64 and 13,990.48 is: 20,995.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.08 : 32,678.64 = 13,990.48 : x
  2. Step 2: Convert to fraction form
    21,776.08/32,678.64 = 13,990.48/x
  3. Step 3: Cross multiply
    21,776.08x = 32,678.64 × 13,990.48
  4. Step 4: Simplify right side
    21,776.08x = 457,189,859.35
  5. Step 5: Solve for x
    x = 457,189,859.35/21,776.08
  6. Step 6: Final answer
    x = 20,995.05

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Similar ratio
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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.