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Finding the Fourth Proportional to 30,008.61, 45,007.47 and 13,354.61

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Solution

The fourth proportional to 30,008.61, 45,007.47 and 13,354.61 is: 20,029.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,008.61 : 45,007.47 = 13,354.61 : x
  2. Step 2: Convert to fraction form
    30,008.61/45,007.47 = 13,354.61/x
  3. Step 3: Cross multiply
    30,008.61x = 45,007.47 × 13,354.61
  4. Step 4: Simplify right side
    30,008.61x = 601,056,983.90
  5. Step 5: Solve for x
    x = 601,056,983.90/30,008.61
  6. Step 6: Final answer
    x = 20,029.48

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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.