Home / 20,798.78-31,214.57-9,699.75

Finding the Fourth Proportional to 20,798.78, 31,214.57 and 9,699.75

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Solution

The fourth proportional to 20,798.78, 31,214.57 and 9,699.75 is: 14,557.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.78 : 31,214.57 = 9,699.75 : x
  2. Step 2: Convert to fraction form
    20,798.78/31,214.57 = 9,699.75/x
  3. Step 3: Cross multiply
    20,798.78x = 31,214.57 × 9,699.75
  4. Step 4: Simplify right side
    20,798.78x = 302,773,476.86
  5. Step 5: Solve for x
    x = 302,773,476.86/20,798.78
  6. Step 6: Final answer
    x = 14,557.27

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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.