Home / 20,941.08-31,403.58-8,456.76

Finding the Fourth Proportional to 20,941.08, 31,403.58 and 8,456.76

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Solution

The fourth proportional to 20,941.08, 31,403.58 and 8,456.76 is: 12,681.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.08 : 31,403.58 = 8,456.76 : x
  2. Step 2: Convert to fraction form
    20,941.08/31,403.58 = 8,456.76/x
  3. Step 3: Cross multiply
    20,941.08x = 31,403.58 × 8,456.76
  4. Step 4: Simplify right side
    20,941.08x = 265,572,539.20
  5. Step 5: Solve for x
    x = 265,572,539.20/20,941.08
  6. Step 6: Final answer
    x = 12,681.89

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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.