Home / 13,503.51-20,255.67-4,143.15

Finding the Fourth Proportional to 13,503.51, 20,255.67 and 4,143.15

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Solution

The fourth proportional to 13,503.51, 20,255.67 and 4,143.15 is: 6,214.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.51 : 20,255.67 = 4,143.15 : x
  2. Step 2: Convert to fraction form
    13,503.51/20,255.67 = 4,143.15/x
  3. Step 3: Cross multiply
    13,503.51x = 20,255.67 × 4,143.15
  4. Step 4: Simplify right side
    13,503.51x = 83,922,279.16
  5. Step 5: Solve for x
    x = 83,922,279.16/13,503.51
  6. Step 6: Final answer
    x = 6,214.85

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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.