Home / 30,447.70-45,606.96-19,880.38

Finding the Fourth Proportional to 30,447.70, 45,606.96 and 19,880.38

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Solution

The fourth proportional to 30,447.70, 45,606.96 and 19,880.38 is: 29,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.70 : 45,606.96 = 19,880.38 : x
  2. Step 2: Convert to fraction form
    30,447.70/45,606.96 = 19,880.38/x
  3. Step 3: Cross multiply
    30,447.70x = 45,606.96 × 19,880.38
  4. Step 4: Simplify right side
    30,447.70x = 906,683,695.44
  5. Step 5: Solve for x
    x = 906,683,695.44/30,447.70
  6. Step 6: Final answer
    x = 29,778.40

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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.