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Finding the Fourth Proportional to 13,009.72, 17,953.47 and 7,344.70

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Solution

The fourth proportional to 13,009.72, 17,953.47 and 7,344.70 is: 10,135.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,009.72 : 17,953.47 = 7,344.70 : x
  2. Step 2: Convert to fraction form
    13,009.72/17,953.47 = 7,344.70/x
  3. Step 3: Cross multiply
    13,009.72x = 17,953.47 × 7,344.70
  4. Step 4: Simplify right side
    13,009.72x = 131,862,851.11
  5. Step 5: Solve for x
    x = 131,862,851.11/13,009.72
  6. Step 6: Final answer
    x = 10,135.72

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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.