Home / 15,290.56-21,101.19-8,916.97

Finding the Fourth Proportional to 15,290.56, 21,101.19 and 8,916.97

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Solution

The fourth proportional to 15,290.56, 21,101.19 and 8,916.97 is: 12,305.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.56 : 21,101.19 = 8,916.97 : x
  2. Step 2: Convert to fraction form
    15,290.56/21,101.19 = 8,916.97/x
  3. Step 3: Cross multiply
    15,290.56x = 21,101.19 × 8,916.97
  4. Step 4: Simplify right side
    15,290.56x = 188,158,678.19
  5. Step 5: Solve for x
    x = 188,158,678.19/15,290.56
  6. Step 6: Final answer
    x = 12,305.55

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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.