Home / 30,855.11-42,579.54-16,707.78

Finding the Fourth Proportional to 30,855.11, 42,579.54 and 16,707.78

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Solution

The fourth proportional to 30,855.11, 42,579.54 and 16,707.78 is: 23,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.11 : 42,579.54 = 16,707.78 : x
  2. Step 2: Convert to fraction form
    30,855.11/42,579.54 = 16,707.78/x
  3. Step 3: Cross multiply
    30,855.11x = 42,579.54 × 16,707.78
  4. Step 4: Simplify right side
    30,855.11x = 711,409,586.82
  5. Step 5: Solve for x
    x = 711,409,586.82/30,855.11
  6. Step 6: Final answer
    x = 23,056.46

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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.