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Finding the Fourth Proportional to 14,521.92, 21,784.74 and 7,126.56

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Solution

The fourth proportional to 14,521.92, 21,784.74 and 7,126.56 is: 10,690.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,521.92 : 21,784.74 = 7,126.56 : x
  2. Step 2: Convert to fraction form
    14,521.92/21,784.74 = 7,126.56/x
  3. Step 3: Cross multiply
    14,521.92x = 21,784.74 × 7,126.56
  4. Step 4: Simplify right side
    14,521.92x = 155,250,256.69
  5. Step 5: Solve for x
    x = 155,250,256.69/14,521.92
  6. Step 6: Final answer
    x = 10,690.75

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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.