Home / 30,857.40-42,583-16,709.92

Finding the Fourth Proportional to 30,857.40, 42,583 and 16,709.92

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Solution

The fourth proportional to 30,857.40, 42,583 and 16,709.92 is: 23,059.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,857.40 : 42,583 = 16,709.92 : x
  2. Step 2: Convert to fraction form
    30,857.40/42,583 = 16,709.92/x
  3. Step 3: Cross multiply
    30,857.40x = 42,583 × 16,709.92
  4. Step 4: Simplify right side
    30,857.40x = 711,558,523.36
  5. Step 5: Solve for x
    x = 711,558,523.36/30,857.40
  6. Step 6: Final answer
    x = 23,059.57

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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.