Home / 13,078.65-18,035.29-11,196.47

Finding the Fourth Proportional to 13,078.65, 18,035.29 and 11,196.47

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Solution

The fourth proportional to 13,078.65, 18,035.29 and 11,196.47 is: 15,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.65 : 18,035.29 = 11,196.47 : x
  2. Step 2: Convert to fraction form
    13,078.65/18,035.29 = 11,196.47/x
  3. Step 3: Cross multiply
    13,078.65x = 18,035.29 × 11,196.47
  4. Step 4: Simplify right side
    13,078.65x = 201,931,437.27
  5. Step 5: Solve for x
    x = 201,931,437.27/13,078.65
  6. Step 6: Final answer
    x = 15,439.78

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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.