Home / 20,436.81-28,203.51-11,484.12

Finding the Fourth Proportional to 20,436.81, 28,203.51 and 11,484.12

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Solution

The fourth proportional to 20,436.81, 28,203.51 and 11,484.12 is: 15,848.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.81 : 28,203.51 = 11,484.12 : x
  2. Step 2: Convert to fraction form
    20,436.81/28,203.51 = 11,484.12/x
  3. Step 3: Cross multiply
    20,436.81x = 28,203.51 × 11,484.12
  4. Step 4: Simplify right side
    20,436.81x = 323,892,493.26
  5. Step 5: Solve for x
    x = 323,892,493.26/20,436.81
  6. Step 6: Final answer
    x = 15,848.49

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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.