Home / 20,656.70-28,506.24-11,225.26

Finding the Fourth Proportional to 20,656.70, 28,506.24 and 11,225.26

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Solution

The fourth proportional to 20,656.70, 28,506.24 and 11,225.26 is: 15,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.70 : 28,506.24 = 11,225.26 : x
  2. Step 2: Convert to fraction form
    20,656.70/28,506.24 = 11,225.26/x
  3. Step 3: Cross multiply
    20,656.70x = 28,506.24 × 11,225.26
  4. Step 4: Simplify right side
    20,656.70x = 319,990,033.35
  5. Step 5: Solve for x
    x = 319,990,033.35/20,656.70
  6. Step 6: Final answer
    x = 15,490.86

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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.