Home / 30,008.34-45,003.78-12,456.36

Finding the Fourth Proportional to 30,008.34, 45,003.78 and 12,456.36

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Solution

The fourth proportional to 30,008.34, 45,003.78 and 12,456.36 is: 18,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,008.34 : 45,003.78 = 12,456.36 : x
  2. Step 2: Convert to fraction form
    30,008.34/45,003.78 = 12,456.36/x
  3. Step 3: Cross multiply
    30,008.34x = 45,003.78 × 12,456.36
  4. Step 4: Simplify right side
    30,008.34x = 560,583,285.04
  5. Step 5: Solve for x
    x = 560,583,285.04/30,008.34
  6. Step 6: Final answer
    x = 18,680.92

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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.