Home / 21,376.12-32,076.26-11,515.16

Finding the Fourth Proportional to 21,376.12, 32,076.26 and 11,515.16

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Solution

The fourth proportional to 21,376.12, 32,076.26 and 11,515.16 is: 17,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.12 : 32,076.26 = 11,515.16 : x
  2. Step 2: Convert to fraction form
    21,376.12/32,076.26 = 11,515.16/x
  3. Step 3: Cross multiply
    21,376.12x = 32,076.26 × 11,515.16
  4. Step 4: Simplify right side
    21,376.12x = 369,363,266.10
  5. Step 5: Solve for x
    x = 369,363,266.10/21,376.12
  6. Step 6: Final answer
    x = 17,279.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.