Home / 31,685.10-43,725.47-19,748.42

Finding the Fourth Proportional to 31,685.10, 43,725.47 and 19,748.42

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Solution

The fourth proportional to 31,685.10, 43,725.47 and 19,748.42 is: 27,252.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.10 : 43,725.47 = 19,748.42 : x
  2. Step 2: Convert to fraction form
    31,685.10/43,725.47 = 19,748.42/x
  3. Step 3: Cross multiply
    31,685.10x = 43,725.47 × 19,748.42
  4. Step 4: Simplify right side
    31,685.10x = 863,508,946.26
  5. Step 5: Solve for x
    x = 863,508,946.26/31,685.10
  6. Step 6: Final answer
    x = 27,252.84

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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.