Home / 13,125.33-18,112.96-7,157.01

Finding the Fourth Proportional to 13,125.33, 18,112.96 and 7,157.01

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Solution

The fourth proportional to 13,125.33, 18,112.96 and 7,157.01 is: 9,876.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.33 : 18,112.96 = 7,157.01 : x
  2. Step 2: Convert to fraction form
    13,125.33/18,112.96 = 7,157.01/x
  3. Step 3: Cross multiply
    13,125.33x = 18,112.96 × 7,157.01
  4. Step 4: Simplify right side
    13,125.33x = 129,634,545.28
  5. Step 5: Solve for x
    x = 129,634,545.28/13,125.33
  6. Step 6: Final answer
    x = 9,876.67

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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.