Home / 20,770.24-28,663.32-11,339.16

Finding the Fourth Proportional to 20,770.24, 28,663.32 and 11,339.16

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Solution

The fourth proportional to 20,770.24, 28,663.32 and 11,339.16 is: 15,648.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.24 : 28,663.32 = 11,339.16 : x
  2. Step 2: Convert to fraction form
    20,770.24/28,663.32 = 11,339.16/x
  3. Step 3: Cross multiply
    20,770.24x = 28,663.32 × 11,339.16
  4. Step 4: Simplify right side
    20,770.24x = 325,017,971.61
  5. Step 5: Solve for x
    x = 325,017,971.61/20,770.24
  6. Step 6: Final answer
    x = 15,648.25

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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.