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Finding the Fourth Proportional to 10,962.87, 15,128.93 and 6,486.51

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Solution

The fourth proportional to 10,962.87, 15,128.93 and 6,486.51 is: 8,951.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,962.87 : 15,128.93 = 6,486.51 : x
  2. Step 2: Convert to fraction form
    10,962.87/15,128.93 = 6,486.51/x
  3. Step 3: Cross multiply
    10,962.87x = 15,128.93 × 6,486.51
  4. Step 4: Simplify right side
    10,962.87x = 98,133,923.30
  5. Step 5: Solve for x
    x = 98,133,923.30/10,962.87
  6. Step 6: Final answer
    x = 8,951.48

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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.