Home / 13,756.16-18,982.89-7,788.35

Finding the Fourth Proportional to 13,756.16, 18,982.89 and 7,788.35

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Solution

The fourth proportional to 13,756.16, 18,982.89 and 7,788.35 is: 10,747.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.16 : 18,982.89 = 7,788.35 : x
  2. Step 2: Convert to fraction form
    13,756.16/18,982.89 = 7,788.35/x
  3. Step 3: Cross multiply
    13,756.16x = 18,982.89 × 7,788.35
  4. Step 4: Simplify right side
    13,756.16x = 147,845,438.79
  5. Step 5: Solve for x
    x = 147,845,438.79/13,756.16
  6. Step 6: Final answer
    x = 10,747.58

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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.