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Finding the Fourth Proportional to 14,234.31, 19,642.64 and 7,945.47

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Solution

The fourth proportional to 14,234.31, 19,642.64 and 7,945.47 is: 10,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,234.31 : 19,642.64 = 7,945.47 : x
  2. Step 2: Convert to fraction form
    14,234.31/19,642.64 = 7,945.47/x
  3. Step 3: Cross multiply
    14,234.31x = 19,642.64 × 7,945.47
  4. Step 4: Simplify right side
    14,234.31x = 156,069,967.11
  5. Step 5: Solve for x
    x = 156,069,967.11/14,234.31
  6. Step 6: Final answer
    x = 10,964.35

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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.