Home / 13,750.81-20,503.61-12,673.71

Finding the Fourth Proportional to 13,750.81, 20,503.61 and 12,673.71

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Solution

The fourth proportional to 13,750.81, 20,503.61 and 12,673.71 is: 18,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.81 : 20,503.61 = 12,673.71 : x
  2. Step 2: Convert to fraction form
    13,750.81/20,503.61 = 12,673.71/x
  3. Step 3: Cross multiply
    13,750.81x = 20,503.61 × 12,673.71
  4. Step 4: Simplify right side
    13,750.81x = 259,856,807.09
  5. Step 5: Solve for x
    x = 259,856,807.09/13,750.81
  6. Step 6: Final answer
    x = 18,897.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.