Home / 38,145.36-52,639.48-21,149.16

Finding the Fourth Proportional to 38,145.36, 52,639.48 and 21,149.16

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Solution

The fourth proportional to 38,145.36, 52,639.48 and 21,149.16 is: 29,185.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,145.36 : 52,639.48 = 21,149.16 : x
  2. Step 2: Convert to fraction form
    38,145.36/52,639.48 = 21,149.16/x
  3. Step 3: Cross multiply
    38,145.36x = 52,639.48 × 21,149.16
  4. Step 4: Simplify right side
    38,145.36x = 1,113,280,784.84
  5. Step 5: Solve for x
    x = 1,113,280,784.84/38,145.36
  6. Step 6: Final answer
    x = 29,185.22

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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.