Home / 11,288.22-15,569.19-9,888.54

Finding the Fourth Proportional to 11,288.22, 15,569.19 and 9,888.54

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Solution

The fourth proportional to 11,288.22, 15,569.19 and 9,888.54 is: 13,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,288.22 : 15,569.19 = 9,888.54 : x
  2. Step 2: Convert to fraction form
    11,288.22/15,569.19 = 9,888.54/x
  3. Step 3: Cross multiply
    11,288.22x = 15,569.19 × 9,888.54
  4. Step 4: Simplify right side
    11,288.22x = 153,956,558.08
  5. Step 5: Solve for x
    x = 153,956,558.08/11,288.22
  6. Step 6: Final answer
    x = 13,638.69

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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.