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Finding the Fourth Proportional to 15,527.99, 21,425.78 and 9,156.58

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Solution

The fourth proportional to 15,527.99, 21,425.78 and 9,156.58 is: 12,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.99 : 21,425.78 = 9,156.58 : x
  2. Step 2: Convert to fraction form
    15,527.99/21,425.78 = 9,156.58/x
  3. Step 3: Cross multiply
    15,527.99x = 21,425.78 × 9,156.58
  4. Step 4: Simplify right side
    15,527.99x = 196,186,837.96
  5. Step 5: Solve for x
    x = 196,186,837.96/15,527.99
  6. Step 6: Final answer
    x = 12,634.40

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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.