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Finding the Fourth Proportional to 11,130.47, 15,360.05 and 6,162.47

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Solution

The fourth proportional to 11,130.47, 15,360.05 and 6,162.47 is: 8,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.47 : 15,360.05 = 6,162.47 : x
  2. Step 2: Convert to fraction form
    11,130.47/15,360.05 = 6,162.47/x
  3. Step 3: Cross multiply
    11,130.47x = 15,360.05 × 6,162.47
  4. Step 4: Simplify right side
    11,130.47x = 94,655,808.87
  5. Step 5: Solve for x
    x = 94,655,808.87/11,130.47
  6. Step 6: Final answer
    x = 8,504.21

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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.