Home / 38,120.18-57,103.72-21,455.24

Finding the Fourth Proportional to 38,120.18, 57,103.72 and 21,455.24

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Solution

The fourth proportional to 38,120.18, 57,103.72 and 21,455.24 is: 32,139.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,120.18 : 57,103.72 = 21,455.24 : x
  2. Step 2: Convert to fraction form
    38,120.18/57,103.72 = 21,455.24/x
  3. Step 3: Cross multiply
    38,120.18x = 57,103.72 × 21,455.24
  4. Step 4: Simplify right side
    38,120.18x = 1,225,173,678.34
  5. Step 5: Solve for x
    x = 1,225,173,678.34/38,120.18
  6. Step 6: Final answer
    x = 32,139.77

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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.