Home / 13,938.50-19,235.36-7,650.88

Finding the Fourth Proportional to 13,938.50, 19,235.36 and 7,650.88

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Solution

The fourth proportional to 13,938.50, 19,235.36 and 7,650.88 is: 10,558.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.50 : 19,235.36 = 7,650.88 : x
  2. Step 2: Convert to fraction form
    13,938.50/19,235.36 = 7,650.88/x
  3. Step 3: Cross multiply
    13,938.50x = 19,235.36 × 7,650.88
  4. Step 4: Simplify right side
    13,938.50x = 147,167,431.12
  5. Step 5: Solve for x
    x = 147,167,431.12/13,938.50
  6. Step 6: Final answer
    x = 10,558.34

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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.