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Finding the Fourth Proportional to 10,879.53, 15,012.62 and 6,403.02

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Solution

The fourth proportional to 10,879.53, 15,012.62 and 6,403.02 is: 8,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.53 : 15,012.62 = 6,403.02 : x
  2. Step 2: Convert to fraction form
    10,879.53/15,012.62 = 6,403.02/x
  3. Step 3: Cross multiply
    10,879.53x = 15,012.62 × 6,403.02
  4. Step 4: Simplify right side
    10,879.53x = 96,126,077.83
  5. Step 5: Solve for x
    x = 96,126,077.83/10,879.53
  6. Step 6: Final answer
    x = 8,835.50

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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.