Home / 30,815.28-42,525.12-16,668.06

Finding the Fourth Proportional to 30,815.28, 42,525.12 and 16,668.06

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Solution

The fourth proportional to 30,815.28, 42,525.12 and 16,668.06 is: 23,001.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.28 : 42,525.12 = 16,668.06 : x
  2. Step 2: Convert to fraction form
    30,815.28/42,525.12 = 16,668.06/x
  3. Step 3: Cross multiply
    30,815.28x = 42,525.12 × 16,668.06
  4. Step 4: Simplify right side
    30,815.28x = 708,811,251.67
  5. Step 5: Solve for x
    x = 708,811,251.67/30,815.28
  6. Step 6: Final answer
    x = 23,001.94

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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.