Home / 20,487.86-30,707.48-8,776.34

Finding the Fourth Proportional to 20,487.86, 30,707.48 and 8,776.34

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Solution

The fourth proportional to 20,487.86, 30,707.48 and 8,776.34 is: 13,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.86 : 30,707.48 = 8,776.34 : x
  2. Step 2: Convert to fraction form
    20,487.86/30,707.48 = 8,776.34/x
  3. Step 3: Cross multiply
    20,487.86x = 30,707.48 × 8,776.34
  4. Step 4: Simplify right side
    20,487.86x = 269,499,285.02
  5. Step 5: Solve for x
    x = 269,499,285.02/20,487.86
  6. Step 6: Final answer
    x = 13,154.10

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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.