Home / 39,235.32-54,145.44-21,330.72

Finding the Fourth Proportional to 39,235.32, 54,145.44 and 21,330.72

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Solution

The fourth proportional to 39,235.32, 54,145.44 and 21,330.72 is: 29,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.32 : 54,145.44 = 21,330.72 : x
  2. Step 2: Convert to fraction form
    39,235.32/54,145.44 = 21,330.72/x
  3. Step 3: Cross multiply
    39,235.32x = 54,145.44 × 21,330.72
  4. Step 4: Simplify right side
    39,235.32x = 1,154,961,219.92
  5. Step 5: Solve for x
    x = 1,154,961,219.92/39,235.32
  6. Step 6: Final answer
    x = 29,436.77

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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.