Home / 30,808.95-42,516.36-16,661.76

Finding the Fourth Proportional to 30,808.95, 42,516.36 and 16,661.76

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Solution

The fourth proportional to 30,808.95, 42,516.36 and 16,661.76 is: 22,993.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.95 : 42,516.36 = 16,661.76 : x
  2. Step 2: Convert to fraction form
    30,808.95/42,516.36 = 16,661.76/x
  3. Step 3: Cross multiply
    30,808.95x = 42,516.36 × 16,661.76
  4. Step 4: Simplify right side
    30,808.95x = 708,397,386.39
  5. Step 5: Solve for x
    x = 708,397,386.39/30,808.95
  6. Step 6: Final answer
    x = 22,993.23

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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.