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Finding the Fourth Proportional to 19,693.86, 29,576.02 and 18,901.07

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Solution

The fourth proportional to 19,693.86, 29,576.02 and 18,901.07 is: 28,385.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,693.86 : 29,576.02 = 18,901.07 : x
  2. Step 2: Convert to fraction form
    19,693.86/29,576.02 = 18,901.07/x
  3. Step 3: Cross multiply
    19,693.86x = 29,576.02 × 18,901.07
  4. Step 4: Simplify right side
    19,693.86x = 559,018,424.34
  5. Step 5: Solve for x
    x = 559,018,424.34/19,693.86
  6. Step 6: Final answer
    x = 28,385.42

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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.