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Finding the Fourth Proportional to 15,889.71, 21,937.46 and 12,346.23

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Solution

The fourth proportional to 15,889.71, 21,937.46 and 12,346.23 is: 17,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,889.71 : 21,937.46 = 12,346.23 : x
  2. Step 2: Convert to fraction form
    15,889.71/21,937.46 = 12,346.23/x
  3. Step 3: Cross multiply
    15,889.71x = 21,937.46 × 12,346.23
  4. Step 4: Simplify right side
    15,889.71x = 270,844,865.04
  5. Step 5: Solve for x
    x = 270,844,865.04/15,889.71
  6. Step 6: Final answer
    x = 17,045.30

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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.