Home / 39,027.32-53,857.86-21,122.32

Finding the Fourth Proportional to 39,027.32, 53,857.86 and 21,122.32

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Solution

The fourth proportional to 39,027.32, 53,857.86 and 21,122.32 is: 29,148.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,027.32 : 53,857.86 = 21,122.32 : x
  2. Step 2: Convert to fraction form
    39,027.32/53,857.86 = 21,122.32/x
  3. Step 3: Cross multiply
    39,027.32x = 53,857.86 × 21,122.32
  4. Step 4: Simplify right side
    39,027.32x = 1,137,602,953.44
  5. Step 5: Solve for x
    x = 1,137,602,953.44/39,027.32
  6. Step 6: Final answer
    x = 29,148.89

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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.