Home / 13,989.66-21,025.94-12,958.40

Finding the Fourth Proportional to 13,989.66, 21,025.94 and 12,958.40

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Solution

The fourth proportional to 13,989.66, 21,025.94 and 12,958.40 is: 19,475.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.66 : 21,025.94 = 12,958.40 : x
  2. Step 2: Convert to fraction form
    13,989.66/21,025.94 = 12,958.40/x
  3. Step 3: Cross multiply
    13,989.66x = 21,025.94 × 12,958.40
  4. Step 4: Simplify right side
    13,989.66x = 272,462,370.97
  5. Step 5: Solve for x
    x = 272,462,370.97/13,989.66
  6. Step 6: Final answer
    x = 19,475.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.