Home / 13,958.63-19,261.29-7,989.94

Finding the Fourth Proportional to 13,958.63, 19,261.29 and 7,989.94

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Solution

The fourth proportional to 13,958.63, 19,261.29 and 7,989.94 is: 11,025.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.63 : 19,261.29 = 7,989.94 : x
  2. Step 2: Convert to fraction form
    13,958.63/19,261.29 = 7,989.94/x
  3. Step 3: Cross multiply
    13,958.63x = 19,261.29 × 7,989.94
  4. Step 4: Simplify right side
    13,958.63x = 153,896,551.42
  5. Step 5: Solve for x
    x = 153,896,551.42/13,958.63
  6. Step 6: Final answer
    x = 11,025.19

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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.