Home / 10,420.86-15,628.50-2,923.96

Finding the Fourth Proportional to 10,420.86, 15,628.50 and 2,923.96

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Solution

The fourth proportional to 10,420.86, 15,628.50 and 2,923.96 is: 4,385.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.86 : 15,628.50 = 2,923.96 : x
  2. Step 2: Convert to fraction form
    10,420.86/15,628.50 = 2,923.96/x
  3. Step 3: Cross multiply
    10,420.86x = 15,628.50 × 2,923.96
  4. Step 4: Simplify right side
    10,420.86x = 45,697,108.86
  5. Step 5: Solve for x
    x = 45,697,108.86/10,420.86
  6. Step 6: Final answer
    x = 4,385.16

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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.