Home / 13,801.81-20,639.13-10,250.64

Finding the Fourth Proportional to 13,801.81, 20,639.13 and 10,250.64

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Solution

The fourth proportional to 13,801.81, 20,639.13 and 10,250.64 is: 15,328.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.81 : 20,639.13 = 10,250.64 : x
  2. Step 2: Convert to fraction form
    13,801.81/20,639.13 = 10,250.64/x
  3. Step 3: Cross multiply
    13,801.81x = 20,639.13 × 10,250.64
  4. Step 4: Simplify right side
    13,801.81x = 211,564,291.54
  5. Step 5: Solve for x
    x = 211,564,291.54/13,801.81
  6. Step 6: Final answer
    x = 15,328.74

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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.