Home / 16,989.86-23,355.40-15,178.34

Finding the Fourth Proportional to 16,989.86, 23,355.40 and 15,178.34

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Solution

The fourth proportional to 16,989.86, 23,355.40 and 15,178.34 is: 20,865.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.86 : 23,355.40 = 15,178.34 : x
  2. Step 2: Convert to fraction form
    16,989.86/23,355.40 = 15,178.34/x
  3. Step 3: Cross multiply
    16,989.86x = 23,355.40 × 15,178.34
  4. Step 4: Simplify right side
    16,989.86x = 354,496,202.04
  5. Step 5: Solve for x
    x = 354,496,202.04/16,989.86
  6. Step 6: Final answer
    x = 20,865.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.