Home / 14,911.02-20,555.53-10,420.85

Finding the Fourth Proportional to 14,911.02, 20,555.53 and 10,420.85

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Solution

The fourth proportional to 14,911.02, 20,555.53 and 10,420.85 is: 14,365.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,911.02 : 20,555.53 = 10,420.85 : x
  2. Step 2: Convert to fraction form
    14,911.02/20,555.53 = 10,420.85/x
  3. Step 3: Cross multiply
    14,911.02x = 20,555.53 × 10,420.85
  4. Step 4: Simplify right side
    14,911.02x = 214,206,120.14
  5. Step 5: Solve for x
    x = 214,206,120.14/14,911.02
  6. Step 6: Final answer
    x = 14,365.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.