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Finding the Fourth Proportional to 19,387.32, 29,048.58 and 18,658.32

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Solution

The fourth proportional to 19,387.32, 29,048.58 and 18,658.32 is: 27,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,387.32 : 29,048.58 = 18,658.32 : x
  2. Step 2: Convert to fraction form
    19,387.32/29,048.58 = 18,658.32/x
  3. Step 3: Cross multiply
    19,387.32x = 29,048.58 × 18,658.32
  4. Step 4: Simplify right side
    19,387.32x = 541,997,701.19
  5. Step 5: Solve for x
    x = 541,997,701.19/19,387.32
  6. Step 6: Final answer
    x = 27,956.30

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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.