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Finding the Fourth Proportional to 10,953.39, 15,115.68 and 5,985.39

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Solution

The fourth proportional to 10,953.39, 15,115.68 and 5,985.39 is: 8,259.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,953.39 : 15,115.68 = 5,985.39 : x
  2. Step 2: Convert to fraction form
    10,953.39/15,115.68 = 5,985.39/x
  3. Step 3: Cross multiply
    10,953.39x = 15,115.68 × 5,985.39
  4. Step 4: Simplify right side
    10,953.39x = 90,473,239.92
  5. Step 5: Solve for x
    x = 90,473,239.92/10,953.39
  6. Step 6: Final answer
    x = 8,259.84

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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.