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Finding the Fourth Proportional to 12,561.96, 17,334.94 and 7,528.98

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Solution

The fourth proportional to 12,561.96, 17,334.94 and 7,528.98 is: 10,389.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.96 : 17,334.94 = 7,528.98 : x
  2. Step 2: Convert to fraction form
    12,561.96/17,334.94 = 7,528.98/x
  3. Step 3: Cross multiply
    12,561.96x = 17,334.94 × 7,528.98
  4. Step 4: Simplify right side
    12,561.96x = 130,514,416.56
  5. Step 5: Solve for x
    x = 130,514,416.56/12,561.96
  6. Step 6: Final answer
    x = 10,389.65

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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.