Home / 20,678.01-28,535.30-11,479.24

Finding the Fourth Proportional to 20,678.01, 28,535.30 and 11,479.24

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Solution

The fourth proportional to 20,678.01, 28,535.30 and 11,479.24 is: 15,841.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.01 : 28,535.30 = 11,479.24 : x
  2. Step 2: Convert to fraction form
    20,678.01/28,535.30 = 11,479.24/x
  3. Step 3: Cross multiply
    20,678.01x = 28,535.30 × 11,479.24
  4. Step 4: Simplify right side
    20,678.01x = 327,563,578.49
  5. Step 5: Solve for x
    x = 327,563,578.49/20,678.01
  6. Step 6: Final answer
    x = 15,841.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.