Home / 13,120.88-19,681.08-9,242.56

Finding the Fourth Proportional to 13,120.88, 19,681.08 and 9,242.56

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Solution

The fourth proportional to 13,120.88, 19,681.08 and 9,242.56 is: 13,863.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.88 : 19,681.08 = 9,242.56 : x
  2. Step 2: Convert to fraction form
    13,120.88/19,681.08 = 9,242.56/x
  3. Step 3: Cross multiply
    13,120.88x = 19,681.08 × 9,242.56
  4. Step 4: Simplify right side
    13,120.88x = 181,903,562.76
  5. Step 5: Solve for x
    x = 181,903,562.76/13,120.88
  6. Step 6: Final answer
    x = 13,863.67

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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.