Home / 13,135.55-19,695.74-8,980.59

Finding the Fourth Proportional to 13,135.55, 19,695.74 and 8,980.59

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Solution

The fourth proportional to 13,135.55, 19,695.74 and 8,980.59 is: 13,465.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.55 : 19,695.74 = 8,980.59 : x
  2. Step 2: Convert to fraction form
    13,135.55/19,695.74 = 8,980.59/x
  3. Step 3: Cross multiply
    13,135.55x = 19,695.74 × 8,980.59
  4. Step 4: Simplify right side
    13,135.55x = 176,879,388.14
  5. Step 5: Solve for x
    x = 176,879,388.14/13,135.55
  6. Step 6: Final answer
    x = 13,465.71

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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.