Home / 31,697.26-43,748.70-21,653.46

Finding the Fourth Proportional to 31,697.26, 43,748.70 and 21,653.46

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Solution

The fourth proportional to 31,697.26, 43,748.70 and 21,653.46 is: 29,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,697.26 : 43,748.70 = 21,653.46 : x
  2. Step 2: Convert to fraction form
    31,697.26/43,748.70 = 21,653.46/x
  3. Step 3: Cross multiply
    31,697.26x = 43,748.70 × 21,653.46
  4. Step 4: Simplify right side
    31,697.26x = 947,310,725.50
  5. Step 5: Solve for x
    x = 947,310,725.50/31,697.26
  6. Step 6: Final answer
    x = 29,886.20

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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.