Home / 13,015.27-17,954.31-7,980.67

Finding the Fourth Proportional to 13,015.27, 17,954.31 and 7,980.67

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Solution

The fourth proportional to 13,015.27, 17,954.31 and 7,980.67 is: 11,009.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.27 : 17,954.31 = 7,980.67 : x
  2. Step 2: Convert to fraction form
    13,015.27/17,954.31 = 7,980.67/x
  3. Step 3: Cross multiply
    13,015.27x = 17,954.31 × 7,980.67
  4. Step 4: Simplify right side
    13,015.27x = 143,287,423.19
  5. Step 5: Solve for x
    x = 143,287,423.19/13,015.27
  6. Step 6: Final answer
    x = 11,009.18

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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.