Home / 13,664.97-18,858.60-7,615.67

Finding the Fourth Proportional to 13,664.97, 18,858.60 and 7,615.67

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Solution

The fourth proportional to 13,664.97, 18,858.60 and 7,615.67 is: 10,510.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.97 : 18,858.60 = 7,615.67 : x
  2. Step 2: Convert to fraction form
    13,664.97/18,858.60 = 7,615.67/x
  3. Step 3: Cross multiply
    13,664.97x = 18,858.60 × 7,615.67
  4. Step 4: Simplify right side
    13,664.97x = 143,620,779.97
  5. Step 5: Solve for x
    x = 143,620,779.97/13,664.97
  6. Step 6: Final answer
    x = 10,510.14

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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.