Home / 39,005.32-53,827.18-21,100.28

Finding the Fourth Proportional to 39,005.32, 53,827.18 and 21,100.28

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Solution

The fourth proportional to 39,005.32, 53,827.18 and 21,100.28 is: 29,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,005.32 : 53,827.18 = 21,100.28 : x
  2. Step 2: Convert to fraction form
    39,005.32/53,827.18 = 21,100.28/x
  3. Step 3: Cross multiply
    39,005.32x = 53,827.18 × 21,100.28
  4. Step 4: Simplify right side
    39,005.32x = 1,135,768,730.55
  5. Step 5: Solve for x
    x = 1,135,768,730.55/39,005.32
  6. Step 6: Final answer
    x = 29,118.30

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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.