Home / 13,388.94-18,476.23-7,420.46

Finding the Fourth Proportional to 13,388.94, 18,476.23 and 7,420.46

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Solution

The fourth proportional to 13,388.94, 18,476.23 and 7,420.46 is: 10,239.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.94 : 18,476.23 = 7,420.46 : x
  2. Step 2: Convert to fraction form
    13,388.94/18,476.23 = 7,420.46/x
  3. Step 3: Cross multiply
    13,388.94x = 18,476.23 × 7,420.46
  4. Step 4: Simplify right side
    13,388.94x = 137,102,125.67
  5. Step 5: Solve for x
    x = 137,102,125.67/13,388.94
  6. Step 6: Final answer
    x = 10,239.95

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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.