Home / 13,905.50-20,865.74-10,106.55

Finding the Fourth Proportional to 13,905.50, 20,865.74 and 10,106.55

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Solution

The fourth proportional to 13,905.50, 20,865.74 and 10,106.55 is: 15,165.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.50 : 20,865.74 = 10,106.55 : x
  2. Step 2: Convert to fraction form
    13,905.50/20,865.74 = 10,106.55/x
  3. Step 3: Cross multiply
    13,905.50x = 20,865.74 × 10,106.55
  4. Step 4: Simplify right side
    13,905.50x = 210,880,594.06
  5. Step 5: Solve for x
    x = 210,880,594.06/13,905.50
  6. Step 6: Final answer
    x = 15,165.27

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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.