Home / 13,986.93-19,301.81-7,938.30

Finding the Fourth Proportional to 13,986.93, 19,301.81 and 7,938.30

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Solution

The fourth proportional to 13,986.93, 19,301.81 and 7,938.30 is: 10,954.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.93 : 19,301.81 = 7,938.30 : x
  2. Step 2: Convert to fraction form
    13,986.93/19,301.81 = 7,938.30/x
  3. Step 3: Cross multiply
    13,986.93x = 19,301.81 × 7,938.30
  4. Step 4: Simplify right side
    13,986.93x = 153,223,518.63
  5. Step 5: Solve for x
    x = 153,223,518.63/13,986.93
  6. Step 6: Final answer
    x = 10,954.76

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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.