Home / 20,045.04-30,058.20-8,355.12

Finding the Fourth Proportional to 20,045.04, 30,058.20 and 8,355.12

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Solution

The fourth proportional to 20,045.04, 30,058.20 and 8,355.12 is: 12,528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,045.04 : 30,058.20 = 8,355.12 : x
  2. Step 2: Convert to fraction form
    20,045.04/30,058.20 = 8,355.12/x
  3. Step 3: Cross multiply
    20,045.04x = 30,058.20 × 8,355.12
  4. Step 4: Simplify right side
    20,045.04x = 251,139,867.98
  5. Step 5: Solve for x
    x = 251,139,867.98/20,045.04
  6. Step 6: Final answer
    x = 12,528.78

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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.