Home / 15,258.29-21,055.78-8,542.78

Finding the Fourth Proportional to 15,258.29, 21,055.78 and 8,542.78

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Solution

The fourth proportional to 15,258.29, 21,055.78 and 8,542.78 is: 11,788.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,258.29 : 21,055.78 = 8,542.78 : x
  2. Step 2: Convert to fraction form
    15,258.29/21,055.78 = 8,542.78/x
  3. Step 3: Cross multiply
    15,258.29x = 21,055.78 × 8,542.78
  4. Step 4: Simplify right side
    15,258.29x = 179,874,854.31
  5. Step 5: Solve for x
    x = 179,874,854.31/15,258.29
  6. Step 6: Final answer
    x = 11,788.67

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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.