Home / 13,316.49-18,454.44-13,128.57

Finding the Fourth Proportional to 13,316.49, 18,454.44 and 13,128.57

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Solution

The fourth proportional to 13,316.49, 18,454.44 and 13,128.57 is: 18,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.49 : 18,454.44 = 13,128.57 : x
  2. Step 2: Convert to fraction form
    13,316.49/18,454.44 = 13,128.57/x
  3. Step 3: Cross multiply
    13,316.49x = 18,454.44 × 13,128.57
  4. Step 4: Simplify right side
    13,316.49x = 242,280,407.35
  5. Step 5: Solve for x
    x = 242,280,407.35/13,316.49
  6. Step 6: Final answer
    x = 18,194.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.