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Finding the Fourth Proportional to 13,025.65, 17,983.07 and 8,557.20

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Solution

The fourth proportional to 13,025.65, 17,983.07 and 8,557.20 is: 11,813.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,025.65 : 17,983.07 = 8,557.20 : x
  2. Step 2: Convert to fraction form
    13,025.65/17,983.07 = 8,557.20/x
  3. Step 3: Cross multiply
    13,025.65x = 17,983.07 × 8,557.20
  4. Step 4: Simplify right side
    13,025.65x = 153,884,726.60
  5. Step 5: Solve for x
    x = 153,884,726.60/13,025.65
  6. Step 6: Final answer
    x = 11,813.98

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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.