Home / 20,911.29-31,339.25-9,798.08

Finding the Fourth Proportional to 20,911.29, 31,339.25 and 9,798.08

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Solution

The fourth proportional to 20,911.29, 31,339.25 and 9,798.08 is: 14,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.29 : 31,339.25 = 9,798.08 : x
  2. Step 2: Convert to fraction form
    20,911.29/31,339.25 = 9,798.08/x
  3. Step 3: Cross multiply
    20,911.29x = 31,339.25 × 9,798.08
  4. Step 4: Simplify right side
    20,911.29x = 307,064,458.42
  5. Step 5: Solve for x
    x = 307,064,458.42/20,911.29
  6. Step 6: Final answer
    x = 14,684.15

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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.