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Finding the Fourth Proportional to 30,000.72, 45,005.88 and 15,203.64

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Solution

The fourth proportional to 30,000.72, 45,005.88 and 15,203.64 is: 22,807.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,000.72 : 45,005.88 = 15,203.64 : x
  2. Step 2: Convert to fraction form
    30,000.72/45,005.88 = 15,203.64/x
  3. Step 3: Cross multiply
    30,000.72x = 45,005.88 × 15,203.64
  4. Step 4: Simplify right side
    30,000.72x = 684,253,197.40
  5. Step 5: Solve for x
    x = 684,253,197.40/30,000.72
  6. Step 6: Final answer
    x = 22,807.89

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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.