Home / 19,290.72-26,609.28-13,238.20

Finding the Fourth Proportional to 19,290.72, 26,609.28 and 13,238.20

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Solution

The fourth proportional to 19,290.72, 26,609.28 and 13,238.20 is: 18,260.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.72 : 26,609.28 = 13,238.20 : x
  2. Step 2: Convert to fraction form
    19,290.72/26,609.28 = 13,238.20/x
  3. Step 3: Cross multiply
    19,290.72x = 26,609.28 × 13,238.20
  4. Step 4: Simplify right side
    19,290.72x = 352,258,837.78
  5. Step 5: Solve for x
    x = 352,258,837.78/19,290.72
  6. Step 6: Final answer
    x = 18,260.53

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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.