Home / 38,431.16-53,037.44-21,665.24

Finding the Fourth Proportional to 38,431.16, 53,037.44 and 21,665.24

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Solution

The fourth proportional to 38,431.16, 53,037.44 and 21,665.24 is: 29,899.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.16 : 53,037.44 = 21,665.24 : x
  2. Step 2: Convert to fraction form
    38,431.16/53,037.44 = 21,665.24/x
  3. Step 3: Cross multiply
    38,431.16x = 53,037.44 × 21,665.24
  4. Step 4: Simplify right side
    38,431.16x = 1,149,068,866.59
  5. Step 5: Solve for x
    x = 1,149,068,866.59/38,431.16
  6. Step 6: Final answer
    x = 29,899.41

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Double scale
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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.