Home / 30,003.08-45,004.64-7,816.40

Finding the Fourth Proportional to 30,003.08, 45,004.64 and 7,816.40

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Solution

The fourth proportional to 30,003.08, 45,004.64 and 7,816.40 is: 11,724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,003.08 : 45,004.64 = 7,816.40 : x
  2. Step 2: Convert to fraction form
    30,003.08/45,004.64 = 7,816.40/x
  3. Step 3: Cross multiply
    30,003.08x = 45,004.64 × 7,816.40
  4. Step 4: Simplify right side
    30,003.08x = 351,774,268.10
  5. Step 5: Solve for x
    x = 351,774,268.10/30,003.08
  6. Step 6: Final answer
    x = 11,724.61

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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.