Home / 9,921.89-14,942.25-9,036.16

Finding the Fourth Proportional to 9,921.89, 14,942.25 and 9,036.16

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Solution

The fourth proportional to 9,921.89, 14,942.25 and 9,036.16 is: 13,608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.89 : 14,942.25 = 9,036.16 : x
  2. Step 2: Convert to fraction form
    9,921.89/14,942.25 = 9,036.16/x
  3. Step 3: Cross multiply
    9,921.89x = 14,942.25 × 9,036.16
  4. Step 4: Simplify right side
    9,921.89x = 135,020,561.76
  5. Step 5: Solve for x
    x = 135,020,561.76/9,921.89
  6. Step 6: Final answer
    x = 13,608.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.