Home / 20,618.76-30,928.13-11,848.08

Finding the Fourth Proportional to 20,618.76, 30,928.13 and 11,848.08

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Solution

The fourth proportional to 20,618.76, 30,928.13 and 11,848.08 is: 17,772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.76 : 30,928.13 = 11,848.08 : x
  2. Step 2: Convert to fraction form
    20,618.76/30,928.13 = 11,848.08/x
  3. Step 3: Cross multiply
    20,618.76x = 30,928.13 × 11,848.08
  4. Step 4: Simplify right side
    20,618.76x = 366,438,899.25
  5. Step 5: Solve for x
    x = 366,438,899.25/20,618.76
  6. Step 6: Final answer
    x = 17,772.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.