Home / 15,456.70-21,330.60-9,087.94

Finding the Fourth Proportional to 15,456.70, 21,330.60 and 9,087.94

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Solution

The fourth proportional to 15,456.70, 21,330.60 and 9,087.94 is: 12,541.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.70 : 21,330.60 = 9,087.94 : x
  2. Step 2: Convert to fraction form
    15,456.70/21,330.60 = 9,087.94/x
  3. Step 3: Cross multiply
    15,456.70x = 21,330.60 × 9,087.94
  4. Step 4: Simplify right side
    15,456.70x = 193,851,212.96
  5. Step 5: Solve for x
    x = 193,851,212.96/15,456.70
  6. Step 6: Final answer
    x = 12,541.57

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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.