Home / 15,551.52-21,461.04-9,178.16

Finding the Fourth Proportional to 15,551.52, 21,461.04 and 9,178.16

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Solution

The fourth proportional to 15,551.52, 21,461.04 and 9,178.16 is: 12,665.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.52 : 21,461.04 = 9,178.16 : x
  2. Step 2: Convert to fraction form
    15,551.52/21,461.04 = 9,178.16/x
  3. Step 3: Cross multiply
    15,551.52x = 21,461.04 × 9,178.16
  4. Step 4: Simplify right side
    15,551.52x = 196,972,858.89
  5. Step 5: Solve for x
    x = 196,972,858.89/15,551.52
  6. Step 6: Final answer
    x = 12,665.83

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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.