Home / 20,848.08-28,763.16-11,889.12

Finding the Fourth Proportional to 20,848.08, 28,763.16 and 11,889.12

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Solution

The fourth proportional to 20,848.08, 28,763.16 and 11,889.12 is: 16,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.08 : 28,763.16 = 11,889.12 : x
  2. Step 2: Convert to fraction form
    20,848.08/28,763.16 = 11,889.12/x
  3. Step 3: Cross multiply
    20,848.08x = 28,763.16 × 11,889.12
  4. Step 4: Simplify right side
    20,848.08x = 341,968,660.82
  5. Step 5: Solve for x
    x = 341,968,660.82/20,848.08
  6. Step 6: Final answer
    x = 16,402.89

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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.