Home / 15,921.16-21,980.81-10,548.15

Finding the Fourth Proportional to 15,921.16, 21,980.81 and 10,548.15

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Solution

The fourth proportional to 15,921.16, 21,980.81 and 10,548.15 is: 14,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.16 : 21,980.81 = 10,548.15 : x
  2. Step 2: Convert to fraction form
    15,921.16/21,980.81 = 10,548.15/x
  3. Step 3: Cross multiply
    15,921.16x = 21,980.81 × 10,548.15
  4. Step 4: Simplify right side
    15,921.16x = 231,856,787.05
  5. Step 5: Solve for x
    x = 231,856,787.05/15,921.16
  6. Step 6: Final answer
    x = 14,562.80

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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.