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Finding the Fourth Proportional to 12,572.94, 18,858.21 and 6,330.48

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Solution

The fourth proportional to 12,572.94, 18,858.21 and 6,330.48 is: 9,495.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.94 : 18,858.21 = 6,330.48 : x
  2. Step 2: Convert to fraction form
    12,572.94/18,858.21 = 6,330.48/x
  3. Step 3: Cross multiply
    12,572.94x = 18,858.21 × 6,330.48
  4. Step 4: Simplify right side
    12,572.94x = 119,381,521.24
  5. Step 5: Solve for x
    x = 119,381,521.24/12,572.94
  6. Step 6: Final answer
    x = 9,495.12

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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.