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Finding the Fourth Proportional to 10,954.50, 15,117.21 and 6,239.22

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Solution

The fourth proportional to 10,954.50, 15,117.21 and 6,239.22 is: 8,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,954.50 : 15,117.21 = 6,239.22 : x
  2. Step 2: Convert to fraction form
    10,954.50/15,117.21 = 6,239.22/x
  3. Step 3: Cross multiply
    10,954.50x = 15,117.21 × 6,239.22
  4. Step 4: Simplify right side
    10,954.50x = 94,319,598.98
  5. Step 5: Solve for x
    x = 94,319,598.98/10,954.50
  6. Step 6: Final answer
    x = 8,610.12

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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.