Home / 30,022.80-45,036.70-8,961.45

Finding the Fourth Proportional to 30,022.80, 45,036.70 and 8,961.45

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Solution

The fourth proportional to 30,022.80, 45,036.70 and 8,961.45 is: 13,442.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,022.80 : 45,036.70 = 8,961.45 : x
  2. Step 2: Convert to fraction form
    30,022.80/45,036.70 = 8,961.45/x
  3. Step 3: Cross multiply
    30,022.80x = 45,036.70 × 8,961.45
  4. Step 4: Simplify right side
    30,022.80x = 403,594,112.81
  5. Step 5: Solve for x
    x = 403,594,112.81/30,022.80
  6. Step 6: Final answer
    x = 13,442.92

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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.