Home / 20,655.08-28,503.44-11,223.68

Finding the Fourth Proportional to 20,655.08, 28,503.44 and 11,223.68

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Solution

The fourth proportional to 20,655.08, 28,503.44 and 11,223.68 is: 15,488.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.08 : 28,503.44 = 11,223.68 : x
  2. Step 2: Convert to fraction form
    20,655.08/28,503.44 = 11,223.68/x
  3. Step 3: Cross multiply
    20,655.08x = 28,503.44 × 11,223.68
  4. Step 4: Simplify right side
    20,655.08x = 319,913,489.46
  5. Step 5: Solve for x
    x = 319,913,489.46/20,655.08
  6. Step 6: Final answer
    x = 15,488.37

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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.