Home / 15,162.57-20,880.87-15,113.34

Finding the Fourth Proportional to 15,162.57, 20,880.87 and 15,113.34

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Solution

The fourth proportional to 15,162.57, 20,880.87 and 15,113.34 is: 20,813.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.57 : 20,880.87 = 15,113.34 : x
  2. Step 2: Convert to fraction form
    15,162.57/20,880.87 = 15,113.34/x
  3. Step 3: Cross multiply
    15,162.57x = 20,880.87 × 15,113.34
  4. Step 4: Simplify right side
    15,162.57x = 315,579,687.81
  5. Step 5: Solve for x
    x = 315,579,687.81/15,162.57
  6. Step 6: Final answer
    x = 20,813.07

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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.