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Finding the Fourth Proportional to 12,508.86, 17,259.49 and 7,472.32

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Solution

The fourth proportional to 12,508.86, 17,259.49 and 7,472.32 is: 10,310.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.86 : 17,259.49 = 7,472.32 : x
  2. Step 2: Convert to fraction form
    12,508.86/17,259.49 = 7,472.32/x
  3. Step 3: Cross multiply
    12,508.86x = 17,259.49 × 7,472.32
  4. Step 4: Simplify right side
    12,508.86x = 128,968,398.51
  5. Step 5: Solve for x
    x = 128,968,398.51/12,508.86
  6. Step 6: Final answer
    x = 10,310.16

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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.