Home / 11,122.56-15,369.60-7,973.76

Finding the Fourth Proportional to 11,122.56, 15,369.60 and 7,973.76

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Solution

The fourth proportional to 11,122.56, 15,369.60 and 7,973.76 is: 11,018.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.56 : 15,369.60 = 7,973.76 : x
  2. Step 2: Convert to fraction form
    11,122.56/15,369.60 = 7,973.76/x
  3. Step 3: Cross multiply
    11,122.56x = 15,369.60 × 7,973.76
  4. Step 4: Simplify right side
    11,122.56x = 122,553,501.70
  5. Step 5: Solve for x
    x = 122,553,501.70/11,122.56
  6. Step 6: Final answer
    x = 11,018.46

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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.