Home / 30,234.60-45,359.10-12,695.40

Finding the Fourth Proportional to 30,234.60, 45,359.10 and 12,695.40

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Solution

The fourth proportional to 30,234.60, 45,359.10 and 12,695.40 is: 19,046.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,234.60 : 45,359.10 = 12,695.40 : x
  2. Step 2: Convert to fraction form
    30,234.60/45,359.10 = 12,695.40/x
  3. Step 3: Cross multiply
    30,234.60x = 45,359.10 × 12,695.40
  4. Step 4: Simplify right side
    30,234.60x = 575,851,918.14
  5. Step 5: Solve for x
    x = 575,851,918.14/30,234.60
  6. Step 6: Final answer
    x = 19,046.12

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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.