Home / 13,735.85-18,955.35-7,767.50

Finding the Fourth Proportional to 13,735.85, 18,955.35 and 7,767.50

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Solution

The fourth proportional to 13,735.85, 18,955.35 and 7,767.50 is: 10,719.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,735.85 : 18,955.35 = 7,767.50 : x
  2. Step 2: Convert to fraction form
    13,735.85/18,955.35 = 7,767.50/x
  3. Step 3: Cross multiply
    13,735.85x = 18,955.35 × 7,767.50
  4. Step 4: Simplify right side
    13,735.85x = 147,235,586.35
  5. Step 5: Solve for x
    x = 147,235,586.35/13,735.85
  6. Step 6: Final answer
    x = 10,719.08

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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.