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Finding the Fourth Proportional to 9,959.55, 14,939.28 and 4,749.63

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Solution

The fourth proportional to 9,959.55, 14,939.28 and 4,749.63 is: 7,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,959.55 : 14,939.28 = 4,749.63 : x
  2. Step 2: Convert to fraction form
    9,959.55/14,939.28 = 4,749.63/x
  3. Step 3: Cross multiply
    9,959.55x = 14,939.28 × 4,749.63
  4. Step 4: Simplify right side
    9,959.55x = 70,956,052.47
  5. Step 5: Solve for x
    x = 70,956,052.47/9,959.55
  6. Step 6: Final answer
    x = 7,124.42

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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.