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Finding the Fourth Proportional to 15,293, 21,112.02 and 14,371.40

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Solution

The fourth proportional to 15,293, 21,112.02 and 14,371.40 is: 19,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,293 : 21,112.02 = 14,371.40 : x
  2. Step 2: Convert to fraction form
    15,293/21,112.02 = 14,371.40/x
  3. Step 3: Cross multiply
    15,293x = 21,112.02 × 14,371.40
  4. Step 4: Simplify right side
    15,293x = 303,409,284.23
  5. Step 5: Solve for x
    x = 303,409,284.23/15,293
  6. Step 6: Final answer
    x = 19,839.75

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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.