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Finding the Fourth Proportional to 12,873.40, 17,763 and 7,569.28

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Solution

The fourth proportional to 12,873.40, 17,763 and 7,569.28 is: 10,444.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873.40 : 17,763 = 7,569.28 : x
  2. Step 2: Convert to fraction form
    12,873.40/17,763 = 7,569.28/x
  3. Step 3: Cross multiply
    12,873.40x = 17,763 × 7,569.28
  4. Step 4: Simplify right side
    12,873.40x = 134,453,120.64
  5. Step 5: Solve for x
    x = 134,453,120.64/12,873.40
  6. Step 6: Final answer
    x = 10,444.26

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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.