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Finding the Fourth Proportional to 13,425.44, 18,526.86 and 7,456.98

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Solution

The fourth proportional to 13,425.44, 18,526.86 and 7,456.98 is: 10,290.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.44 : 18,526.86 = 7,456.98 : x
  2. Step 2: Convert to fraction form
    13,425.44/18,526.86 = 7,456.98/x
  3. Step 3: Cross multiply
    13,425.44x = 18,526.86 × 7,456.98
  4. Step 4: Simplify right side
    13,425.44x = 138,154,424.48
  5. Step 5: Solve for x
    x = 138,154,424.48/13,425.44
  6. Step 6: Final answer
    x = 10,290.50

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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.