Home / 39,235.53-54,145.49-21,330.15

Finding the Fourth Proportional to 39,235.53, 54,145.49 and 21,330.15

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Solution

The fourth proportional to 39,235.53, 54,145.49 and 21,330.15 is: 29,435.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.53 : 54,145.49 = 21,330.15 : x
  2. Step 2: Convert to fraction form
    39,235.53/54,145.49 = 21,330.15/x
  3. Step 3: Cross multiply
    39,235.53x = 54,145.49 × 21,330.15
  4. Step 4: Simplify right side
    39,235.53x = 1,154,931,423.52
  5. Step 5: Solve for x
    x = 1,154,931,423.52/39,235.53
  6. Step 6: Final answer
    x = 29,435.86

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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.