Home / 30,419.28-41,976.63-16,989.90

Finding the Fourth Proportional to 30,419.28, 41,976.63 and 16,989.90

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Solution

The fourth proportional to 30,419.28, 41,976.63 and 16,989.90 is: 23,444.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,419.28 : 41,976.63 = 16,989.90 : x
  2. Step 2: Convert to fraction form
    30,419.28/41,976.63 = 16,989.90/x
  3. Step 3: Cross multiply
    30,419.28x = 41,976.63 × 16,989.90
  4. Step 4: Simplify right side
    30,419.28x = 713,178,746.04
  5. Step 5: Solve for x
    x = 713,178,746.04/30,419.28
  6. Step 6: Final answer
    x = 23,444.96

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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.