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Finding the Fourth Proportional to 15,035.76, 20,749.68 and 9,739.79

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Solution

The fourth proportional to 15,035.76, 20,749.68 and 9,739.79 is: 13,441.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,035.76 : 20,749.68 = 9,739.79 : x
  2. Step 2: Convert to fraction form
    15,035.76/20,749.68 = 9,739.79/x
  3. Step 3: Cross multiply
    15,035.76x = 20,749.68 × 9,739.79
  4. Step 4: Simplify right side
    15,035.76x = 202,097,422.02
  5. Step 5: Solve for x
    x = 202,097,422.02/15,035.76
  6. Step 6: Final answer
    x = 13,441.12

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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.