Home / 38,434.38-53,037.42-21,440.40

Finding the Fourth Proportional to 38,434.38, 53,037.42 and 21,440.40

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Solution

The fourth proportional to 38,434.38, 53,037.42 and 21,440.40 is: 29,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,434.38 : 53,037.42 = 21,440.40 : x
  2. Step 2: Convert to fraction form
    38,434.38/53,037.42 = 21,440.40/x
  3. Step 3: Cross multiply
    38,434.38x = 53,037.42 × 21,440.40
  4. Step 4: Simplify right side
    38,434.38x = 1,137,143,499.77
  5. Step 5: Solve for x
    x = 1,137,143,499.77/38,434.38
  6. Step 6: Final answer
    x = 29,586.62

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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.