Home / 30,126.09-45,189.74-21,204.93

Finding the Fourth Proportional to 30,126.09, 45,189.74 and 21,204.93

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Solution

The fourth proportional to 30,126.09, 45,189.74 and 21,204.93 is: 31,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126.09 : 45,189.74 = 21,204.93 : x
  2. Step 2: Convert to fraction form
    30,126.09/45,189.74 = 21,204.93/x
  3. Step 3: Cross multiply
    30,126.09x = 45,189.74 × 21,204.93
  4. Step 4: Simplify right side
    30,126.09x = 958,245,273.42
  5. Step 5: Solve for x
    x = 958,245,273.42/30,126.09
  6. Step 6: Final answer
    x = 31,807.82

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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.