Home / 13,531.34-20,298.93-4,172.12

Finding the Fourth Proportional to 13,531.34, 20,298.93 and 4,172.12

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Solution

The fourth proportional to 13,531.34, 20,298.93 and 4,172.12 is: 6,258.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.34 : 20,298.93 = 4,172.12 : x
  2. Step 2: Convert to fraction form
    13,531.34/20,298.93 = 4,172.12/x
  3. Step 3: Cross multiply
    13,531.34x = 20,298.93 × 4,172.12
  4. Step 4: Simplify right side
    13,531.34x = 84,689,550.97
  5. Step 5: Solve for x
    x = 84,689,550.97/13,531.34
  6. Step 6: Final answer
    x = 6,258.77

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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.