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Finding the Fourth Proportional to 9,739.68, 13,445.28 and 7,392.48

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Solution

The fourth proportional to 9,739.68, 13,445.28 and 7,392.48 is: 10,205.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,739.68 : 13,445.28 = 7,392.48 : x
  2. Step 2: Convert to fraction form
    9,739.68/13,445.28 = 7,392.48/x
  3. Step 3: Cross multiply
    9,739.68x = 13,445.28 × 7,392.48
  4. Step 4: Simplify right side
    9,739.68x = 99,393,963.49
  5. Step 5: Solve for x
    x = 99,393,963.49/9,739.68
  6. Step 6: Final answer
    x = 10,205.05

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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.