Home / 13,347.75-18,419.32-7,900.35

Finding the Fourth Proportional to 13,347.75, 18,419.32 and 7,900.35

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Solution

The fourth proportional to 13,347.75, 18,419.32 and 7,900.35 is: 10,902.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.75 : 18,419.32 = 7,900.35 : x
  2. Step 2: Convert to fraction form
    13,347.75/18,419.32 = 7,900.35/x
  3. Step 3: Cross multiply
    13,347.75x = 18,419.32 × 7,900.35
  4. Step 4: Simplify right side
    13,347.75x = 145,519,074.76
  5. Step 5: Solve for x
    x = 145,519,074.76/13,347.75
  6. Step 6: Final answer
    x = 10,902.14

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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.