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Finding the Fourth Proportional to 30,663.65, 45,962.67 and 15,857.66

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Solution

The fourth proportional to 30,663.65, 45,962.67 and 15,857.66 is: 23,769.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.65 : 45,962.67 = 15,857.66 : x
  2. Step 2: Convert to fraction form
    30,663.65/45,962.67 = 15,857.66/x
  3. Step 3: Cross multiply
    30,663.65x = 45,962.67 × 15,857.66
  4. Step 4: Simplify right side
    30,663.65x = 728,860,393.55
  5. Step 5: Solve for x
    x = 728,860,393.55/30,663.65
  6. Step 6: Final answer
    x = 23,769.52

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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.