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Finding the Fourth Proportional to 10,959.93, 15,128.64 and 6,487.52

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Solution

The fourth proportional to 10,959.93, 15,128.64 and 6,487.52 is: 8,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.93 : 15,128.64 = 6,487.52 : x
  2. Step 2: Convert to fraction form
    10,959.93/15,128.64 = 6,487.52/x
  3. Step 3: Cross multiply
    10,959.93x = 15,128.64 × 6,487.52
  4. Step 4: Simplify right side
    10,959.93x = 98,147,278.93
  5. Step 5: Solve for x
    x = 98,147,278.93/10,959.93
  6. Step 6: Final answer
    x = 8,955.10

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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.