Home / 13,989.39-19,301.01-7,938.63

Finding the Fourth Proportional to 13,989.39, 19,301.01 and 7,938.63

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Solution

The fourth proportional to 13,989.39, 19,301.01 and 7,938.63 is: 10,952.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.39 : 19,301.01 = 7,938.63 : x
  2. Step 2: Convert to fraction form
    13,989.39/19,301.01 = 7,938.63/x
  3. Step 3: Cross multiply
    13,989.39x = 19,301.01 × 7,938.63
  4. Step 4: Simplify right side
    13,989.39x = 153,223,577.02
  5. Step 5: Solve for x
    x = 153,223,577.02/13,989.39
  6. Step 6: Final answer
    x = 10,952.84

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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.