Home / 38,725.39-53,435.93-21,728.98

Finding the Fourth Proportional to 38,725.39, 53,435.93 and 21,728.98

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Solution

The fourth proportional to 38,725.39, 53,435.93 and 21,728.98 is: 29,983.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,725.39 : 53,435.93 = 21,728.98 : x
  2. Step 2: Convert to fraction form
    38,725.39/53,435.93 = 21,728.98/x
  3. Step 3: Cross multiply
    38,725.39x = 53,435.93 × 21,728.98
  4. Step 4: Simplify right side
    38,725.39x = 1,161,108,423.80
  5. Step 5: Solve for x
    x = 1,161,108,423.80/38,725.39
  6. Step 6: Final answer
    x = 29,983.13

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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.