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Finding the Fourth Proportional to 23,986.20, 33,101.28 and 13,915.20

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Solution

The fourth proportional to 23,986.20, 33,101.28 and 13,915.20 is: 19,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,986.20 : 33,101.28 = 13,915.20 : x
  2. Step 2: Convert to fraction form
    23,986.20/33,101.28 = 13,915.20/x
  3. Step 3: Cross multiply
    23,986.20x = 33,101.28 × 13,915.20
  4. Step 4: Simplify right side
    23,986.20x = 460,610,931.46
  5. Step 5: Solve for x
    x = 460,610,931.46/23,986.20
  6. Step 6: Final answer
    x = 19,203.16

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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.