Home / 13,990.82-19,308.05-7,941.49

Finding the Fourth Proportional to 13,990.82, 19,308.05 and 7,941.49

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Solution

The fourth proportional to 13,990.82, 19,308.05 and 7,941.49 is: 10,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.82 : 19,308.05 = 7,941.49 : x
  2. Step 2: Convert to fraction form
    13,990.82/19,308.05 = 7,941.49/x
  3. Step 3: Cross multiply
    13,990.82x = 19,308.05 × 7,941.49
  4. Step 4: Simplify right side
    13,990.82x = 153,334,700.20
  5. Step 5: Solve for x
    x = 153,334,700.20/13,990.82
  6. Step 6: Final answer
    x = 10,959.66

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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.