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Finding the Fourth Proportional to 30,663.38, 45,999.87 and 9,888.98

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Solution

The fourth proportional to 30,663.38, 45,999.87 and 9,888.98 is: 14,835.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.38 : 45,999.87 = 9,888.98 : x
  2. Step 2: Convert to fraction form
    30,663.38/45,999.87 = 9,888.98/x
  3. Step 3: Cross multiply
    30,663.38x = 45,999.87 × 9,888.98
  4. Step 4: Simplify right side
    30,663.38x = 454,891,794.43
  5. Step 5: Solve for x
    x = 454,891,794.43/30,663.38
  6. Step 6: Final answer
    x = 14,835.02

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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.