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Finding the Fourth Proportional to 12,904.58, 17,807.24 and 7,238.54

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Solution

The fourth proportional to 12,904.58, 17,807.24 and 7,238.54 is: 9,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.58 : 17,807.24 = 7,238.54 : x
  2. Step 2: Convert to fraction form
    12,904.58/17,807.24 = 7,238.54/x
  3. Step 3: Cross multiply
    12,904.58x = 17,807.24 × 7,238.54
  4. Step 4: Simplify right side
    12,904.58x = 128,898,293.80
  5. Step 5: Solve for x
    x = 128,898,293.80/12,904.58
  6. Step 6: Final answer
    x = 9,988.57

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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.