Home / 13,515.05-20,258.23-7,971.01

Finding the Fourth Proportional to 13,515.05, 20,258.23 and 7,971.01

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Solution

The fourth proportional to 13,515.05, 20,258.23 and 7,971.01 is: 11,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.05 : 20,258.23 = 7,971.01 : x
  2. Step 2: Convert to fraction form
    13,515.05/20,258.23 = 7,971.01/x
  3. Step 3: Cross multiply
    13,515.05x = 20,258.23 × 7,971.01
  4. Step 4: Simplify right side
    13,515.05x = 161,478,475.87
  5. Step 5: Solve for x
    x = 161,478,475.87/13,515.05
  6. Step 6: Final answer
    x = 11,948.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.