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Finding the Fourth Proportional to 12,730.42, 17,568.08 and 7,065.19

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Solution

The fourth proportional to 12,730.42, 17,568.08 and 7,065.19 is: 9,750.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.42 : 17,568.08 = 7,065.19 : x
  2. Step 2: Convert to fraction form
    12,730.42/17,568.08 = 7,065.19/x
  3. Step 3: Cross multiply
    12,730.42x = 17,568.08 × 7,065.19
  4. Step 4: Simplify right side
    12,730.42x = 124,121,823.14
  5. Step 5: Solve for x
    x = 124,121,823.14/12,730.42
  6. Step 6: Final answer
    x = 9,750.02

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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.