Home / 20,442.19-28,212.56-11,368.46

Finding the Fourth Proportional to 20,442.19, 28,212.56 and 11,368.46

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Solution

The fourth proportional to 20,442.19, 28,212.56 and 11,368.46 is: 15,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.19 : 28,212.56 = 11,368.46 : x
  2. Step 2: Convert to fraction form
    20,442.19/28,212.56 = 11,368.46/x
  3. Step 3: Cross multiply
    20,442.19x = 28,212.56 × 11,368.46
  4. Step 4: Simplify right side
    20,442.19x = 320,733,247.22
  5. Step 5: Solve for x
    x = 320,733,247.22/20,442.19
  6. Step 6: Final answer
    x = 15,689.77

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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.