Home / 14,935.12-20,610.54-8,221.42

Finding the Fourth Proportional to 14,935.12, 20,610.54 and 8,221.42

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Solution

The fourth proportional to 14,935.12, 20,610.54 and 8,221.42 is: 11,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,935.12 : 20,610.54 = 8,221.42 : x
  2. Step 2: Convert to fraction form
    14,935.12/20,610.54 = 8,221.42/x
  3. Step 3: Cross multiply
    14,935.12x = 20,610.54 × 8,221.42
  4. Step 4: Simplify right side
    14,935.12x = 169,447,905.77
  5. Step 5: Solve for x
    x = 169,447,905.77/14,935.12
  6. Step 6: Final answer
    x = 11,345.60

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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.