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Finding the Fourth Proportional to 12,491.43, 17,235.63 and 7,454.04

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Solution

The fourth proportional to 12,491.43, 17,235.63 and 7,454.04 is: 10,285.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.43 : 17,235.63 = 7,454.04 : x
  2. Step 2: Convert to fraction form
    12,491.43/17,235.63 = 7,454.04/x
  3. Step 3: Cross multiply
    12,491.43x = 17,235.63 × 7,454.04
  4. Step 4: Simplify right side
    12,491.43x = 128,475,075.45
  5. Step 5: Solve for x
    x = 128,475,075.45/12,491.43
  6. Step 6: Final answer
    x = 10,285.06

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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.