Home / 13,390.20-18,476.10-7,647.84

Finding the Fourth Proportional to 13,390.20, 18,476.10 and 7,647.84

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Solution

The fourth proportional to 13,390.20, 18,476.10 and 7,647.84 is: 10,552.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.20 : 18,476.10 = 7,647.84 : x
  2. Step 2: Convert to fraction form
    13,390.20/18,476.10 = 7,647.84/x
  3. Step 3: Cross multiply
    13,390.20x = 18,476.10 × 7,647.84
  4. Step 4: Simplify right side
    13,390.20x = 141,302,256.62
  5. Step 5: Solve for x
    x = 141,302,256.62/13,390.20
  6. Step 6: Final answer
    x = 10,552.66

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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.