Home / 15,405.14-21,258.78-9,437.06

Finding the Fourth Proportional to 15,405.14, 21,258.78 and 9,437.06

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Solution

The fourth proportional to 15,405.14, 21,258.78 and 9,437.06 is: 13,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.14 : 21,258.78 = 9,437.06 : x
  2. Step 2: Convert to fraction form
    15,405.14/21,258.78 = 9,437.06/x
  3. Step 3: Cross multiply
    15,405.14x = 21,258.78 × 9,437.06
  4. Step 4: Simplify right side
    15,405.14x = 200,620,382.39
  5. Step 5: Solve for x
    x = 200,620,382.39/15,405.14
  6. Step 6: Final answer
    x = 13,022.95

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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.