Home / 15,501.78-21,396.96-9,836.64

Finding the Fourth Proportional to 15,501.78, 21,396.96 and 9,836.64

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Solution

The fourth proportional to 15,501.78, 21,396.96 and 9,836.64 is: 13,577.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.78 : 21,396.96 = 9,836.64 : x
  2. Step 2: Convert to fraction form
    15,501.78/21,396.96 = 9,836.64/x
  3. Step 3: Cross multiply
    15,501.78x = 21,396.96 × 9,836.64
  4. Step 4: Simplify right side
    15,501.78x = 210,474,192.61
  5. Step 5: Solve for x
    x = 210,474,192.61/15,501.78
  6. Step 6: Final answer
    x = 13,577.42

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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.