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Finding the Fourth Proportional to 19,612.52, 29,409.54 and 7,123.74

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Solution

The fourth proportional to 19,612.52, 29,409.54 and 7,123.74 is: 10,682.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,612.52 : 29,409.54 = 7,123.74 : x
  2. Step 2: Convert to fraction form
    19,612.52/29,409.54 = 7,123.74/x
  3. Step 3: Cross multiply
    19,612.52x = 29,409.54 × 7,123.74
  4. Step 4: Simplify right side
    19,612.52x = 209,505,916.48
  5. Step 5: Solve for x
    x = 209,505,916.48/19,612.52
  6. Step 6: Final answer
    x = 10,682.25

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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.