Home / 13,438.05-18,544.49-7,470.28

Finding the Fourth Proportional to 13,438.05, 18,544.49 and 7,470.28

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Solution

The fourth proportional to 13,438.05, 18,544.49 and 7,470.28 is: 10,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.05 : 18,544.49 = 7,470.28 : x
  2. Step 2: Convert to fraction form
    13,438.05/18,544.49 = 7,470.28/x
  3. Step 3: Cross multiply
    13,438.05x = 18,544.49 × 7,470.28
  4. Step 4: Simplify right side
    13,438.05x = 138,532,532.76
  5. Step 5: Solve for x
    x = 138,532,532.76/13,438.05
  6. Step 6: Final answer
    x = 10,308.98

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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.