Home / 19,890.41-27,449.47-10,938.59

Finding the Fourth Proportional to 19,890.41, 27,449.47 and 10,938.59

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Solution

The fourth proportional to 19,890.41, 27,449.47 and 10,938.59 is: 15,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.41 : 27,449.47 = 10,938.59 : x
  2. Step 2: Convert to fraction form
    19,890.41/27,449.47 = 10,938.59/x
  3. Step 3: Cross multiply
    19,890.41x = 27,449.47 × 10,938.59
  4. Step 4: Simplify right side
    19,890.41x = 300,258,443.35
  5. Step 5: Solve for x
    x = 300,258,443.35/19,890.41
  6. Step 6: Final answer
    x = 15,095.64

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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.