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Finding the Fourth Proportional to 8,424.98, 12,621.67 and 7,047.17

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Solution

The fourth proportional to 8,424.98, 12,621.67 and 7,047.17 is: 10,557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.98 : 12,621.67 = 7,047.17 : x
  2. Step 2: Convert to fraction form
    8,424.98/12,621.67 = 7,047.17/x
  3. Step 3: Cross multiply
    8,424.98x = 12,621.67 × 7,047.17
  4. Step 4: Simplify right side
    8,424.98x = 88,946,973.45
  5. Step 5: Solve for x
    x = 88,946,973.45/8,424.98
  6. Step 6: Final answer
    x = 10,557.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.