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Finding the Fourth Proportional to 10,349.64, 15,539.04 and 9,879.84

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Solution

The fourth proportional to 10,349.64, 15,539.04 and 9,879.84 is: 14,833.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,349.64 : 15,539.04 = 9,879.84 : x
  2. Step 2: Convert to fraction form
    10,349.64/15,539.04 = 9,879.84/x
  3. Step 3: Cross multiply
    10,349.64x = 15,539.04 × 9,879.84
  4. Step 4: Simplify right side
    10,349.64x = 153,523,228.95
  5. Step 5: Solve for x
    x = 153,523,228.95/10,349.64
  6. Step 6: Final answer
    x = 14,833.68

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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.