Home / 30,966.75-42,727.83-18,859.11

Finding the Fourth Proportional to 30,966.75, 42,727.83 and 18,859.11

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Solution

The fourth proportional to 30,966.75, 42,727.83 and 18,859.11 is: 26,021.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,966.75 : 42,727.83 = 18,859.11 : x
  2. Step 2: Convert to fraction form
    30,966.75/42,727.83 = 18,859.11/x
  3. Step 3: Cross multiply
    30,966.75x = 42,727.83 × 18,859.11
  4. Step 4: Simplify right side
    30,966.75x = 805,808,846.03
  5. Step 5: Solve for x
    x = 805,808,846.03/30,966.75
  6. Step 6: Final answer
    x = 26,021.74

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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.