Home / 38,123.20-52,609.38-20,895.40

Finding the Fourth Proportional to 38,123.20, 52,609.38 and 20,895.40

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Solution

The fourth proportional to 38,123.20, 52,609.38 and 20,895.40 is: 28,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,123.20 : 52,609.38 = 20,895.40 : x
  2. Step 2: Convert to fraction form
    38,123.20/52,609.38 = 20,895.40/x
  3. Step 3: Cross multiply
    38,123.20x = 52,609.38 × 20,895.40
  4. Step 4: Simplify right side
    38,123.20x = 1,099,294,038.85
  5. Step 5: Solve for x
    x = 1,099,294,038.85/38,123.20
  6. Step 6: Final answer
    x = 28,835.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.