Home / 30,258.80-45,389.69-8,072.38

Finding the Fourth Proportional to 30,258.80, 45,389.69 and 8,072.38

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Solution

The fourth proportional to 30,258.80, 45,389.69 and 8,072.38 is: 12,108.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,258.80 : 45,389.69 = 8,072.38 : x
  2. Step 2: Convert to fraction form
    30,258.80/45,389.69 = 8,072.38/x
  3. Step 3: Cross multiply
    30,258.80x = 45,389.69 × 8,072.38
  4. Step 4: Simplify right side
    30,258.80x = 366,402,825.76
  5. Step 5: Solve for x
    x = 366,402,825.76/30,258.80
  6. Step 6: Final answer
    x = 12,108.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.