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Finding the Fourth Proportional to 11,339.61, 15,643.62 and 7,559.10

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Solution

The fourth proportional to 11,339.61, 15,643.62 and 7,559.10 is: 10,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,339.61 : 15,643.62 = 7,559.10 : x
  2. Step 2: Convert to fraction form
    11,339.61/15,643.62 = 7,559.10/x
  3. Step 3: Cross multiply
    11,339.61x = 15,643.62 × 7,559.10
  4. Step 4: Simplify right side
    11,339.61x = 118,251,687.94
  5. Step 5: Solve for x
    x = 118,251,687.94/11,339.61
  6. Step 6: Final answer
    x = 10,428.20

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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.