Home / 30,638.10-45,908.55-20,237.70

Finding the Fourth Proportional to 30,638.10, 45,908.55 and 20,237.70

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Solution

The fourth proportional to 30,638.10, 45,908.55 and 20,237.70 is: 30,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.10 : 45,908.55 = 20,237.70 : x
  2. Step 2: Convert to fraction form
    30,638.10/45,908.55 = 20,237.70/x
  3. Step 3: Cross multiply
    30,638.10x = 45,908.55 × 20,237.70
  4. Step 4: Simplify right side
    30,638.10x = 929,083,462.34
  5. Step 5: Solve for x
    x = 929,083,462.34/30,638.10
  6. Step 6: Final answer
    x = 30,324.45

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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.