Home / 20,710.08-28,578.89-11,756.41

Finding the Fourth Proportional to 20,710.08, 28,578.89 and 11,756.41

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Solution

The fourth proportional to 20,710.08, 28,578.89 and 11,756.41 is: 16,223.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.08 : 28,578.89 = 11,756.41 : x
  2. Step 2: Convert to fraction form
    20,710.08/28,578.89 = 11,756.41/x
  3. Step 3: Cross multiply
    20,710.08x = 28,578.89 × 11,756.41
  4. Step 4: Simplify right side
    20,710.08x = 335,985,106.13
  5. Step 5: Solve for x
    x = 335,985,106.13/20,710.08
  6. Step 6: Final answer
    x = 16,223.26

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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.