Home / 15,541.98-21,448.23-9,168.78

Finding the Fourth Proportional to 15,541.98, 21,448.23 and 9,168.78

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Solution

The fourth proportional to 15,541.98, 21,448.23 and 9,168.78 is: 12,653.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,541.98 : 21,448.23 = 9,168.78 : x
  2. Step 2: Convert to fraction form
    15,541.98/21,448.23 = 9,168.78/x
  3. Step 3: Cross multiply
    15,541.98x = 21,448.23 × 9,168.78
  4. Step 4: Simplify right side
    15,541.98x = 196,654,102.26
  5. Step 5: Solve for x
    x = 196,654,102.26/15,541.98
  6. Step 6: Final answer
    x = 12,653.09

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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.