Home / 20,856.05-31,254.91-9,735.15

Finding the Fourth Proportional to 20,856.05, 31,254.91 and 9,735.15

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Solution

The fourth proportional to 20,856.05, 31,254.91 and 9,735.15 is: 14,589.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.05 : 31,254.91 = 9,735.15 : x
  2. Step 2: Convert to fraction form
    20,856.05/31,254.91 = 9,735.15/x
  3. Step 3: Cross multiply
    20,856.05x = 31,254.91 × 9,735.15
  4. Step 4: Simplify right side
    20,856.05x = 304,271,237.09
  5. Step 5: Solve for x
    x = 304,271,237.09/20,856.05
  6. Step 6: Final answer
    x = 14,589.11

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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.