Home / 30,808.51-42,515.76-16,661.36

Finding the Fourth Proportional to 30,808.51, 42,515.76 and 16,661.36

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Solution

The fourth proportional to 30,808.51, 42,515.76 and 16,661.36 is: 22,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.51 : 42,515.76 = 16,661.36 : x
  2. Step 2: Convert to fraction form
    30,808.51/42,515.76 = 16,661.36/x
  3. Step 3: Cross multiply
    30,808.51x = 42,515.76 × 16,661.36
  4. Step 4: Simplify right side
    30,808.51x = 708,370,276.74
  5. Step 5: Solve for x
    x = 708,370,276.74/30,808.51
  6. Step 6: Final answer
    x = 22,992.68

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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.