Home / 19,816.75-29,725.56-7,971.71

Finding the Fourth Proportional to 19,816.75, 29,725.56 and 7,971.71

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Solution

The fourth proportional to 19,816.75, 29,725.56 and 7,971.71 is: 11,957.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,816.75 : 29,725.56 = 7,971.71 : x
  2. Step 2: Convert to fraction form
    19,816.75/29,725.56 = 7,971.71/x
  3. Step 3: Cross multiply
    19,816.75x = 29,725.56 × 7,971.71
  4. Step 4: Simplify right side
    19,816.75x = 236,963,543.91
  5. Step 5: Solve for x
    x = 236,963,543.91/19,816.75
  6. Step 6: Final answer
    x = 11,957.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.