Home / 13,938.72-19,230.56-7,966.08

Finding the Fourth Proportional to 13,938.72, 19,230.56 and 7,966.08

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Solution

The fourth proportional to 13,938.72, 19,230.56 and 7,966.08 is: 10,990.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.72 : 19,230.56 = 7,966.08 : x
  2. Step 2: Convert to fraction form
    13,938.72/19,230.56 = 7,966.08/x
  3. Step 3: Cross multiply
    13,938.72x = 19,230.56 × 7,966.08
  4. Step 4: Simplify right side
    13,938.72x = 153,192,179.40
  5. Step 5: Solve for x
    x = 153,192,179.40/13,938.72
  6. Step 6: Final answer
    x = 10,990.41

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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.