Home / 30,885.56-42,621.90-16,738.40

Finding the Fourth Proportional to 30,885.56, 42,621.90 and 16,738.40

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Solution

The fourth proportional to 30,885.56, 42,621.90 and 16,738.40 is: 23,098.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,885.56 : 42,621.90 = 16,738.40 : x
  2. Step 2: Convert to fraction form
    30,885.56/42,621.90 = 16,738.40/x
  3. Step 3: Cross multiply
    30,885.56x = 42,621.90 × 16,738.40
  4. Step 4: Simplify right side
    30,885.56x = 713,422,410.96
  5. Step 5: Solve for x
    x = 713,422,410.96/30,885.56
  6. Step 6: Final answer
    x = 23,098.90

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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.