Home / 15,725.07-21,695.29-10,680.55

Finding the Fourth Proportional to 15,725.07, 21,695.29 and 10,680.55

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Solution

The fourth proportional to 15,725.07, 21,695.29 and 10,680.55 is: 14,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.07 : 21,695.29 = 10,680.55 : x
  2. Step 2: Convert to fraction form
    15,725.07/21,695.29 = 10,680.55/x
  3. Step 3: Cross multiply
    15,725.07x = 21,695.29 × 10,680.55
  4. Step 4: Simplify right side
    15,725.07x = 231,717,548.67
  5. Step 5: Solve for x
    x = 231,717,548.67/15,725.07
  6. Step 6: Final answer
    x = 14,735.55

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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.