Home / 30,855.63-42,580.79-16,708.48

Finding the Fourth Proportional to 30,855.63, 42,580.79 and 16,708.48

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Solution

The fourth proportional to 30,855.63, 42,580.79 and 16,708.48 is: 23,057.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.63 : 42,580.79 = 16,708.48 : x
  2. Step 2: Convert to fraction form
    30,855.63/42,580.79 = 16,708.48/x
  3. Step 3: Cross multiply
    30,855.63x = 42,580.79 × 16,708.48
  4. Step 4: Simplify right side
    30,855.63x = 711,460,278.10
  5. Step 5: Solve for x
    x = 711,460,278.10/30,855.63
  6. Step 6: Final answer
    x = 23,057.71

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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.