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Finding the Fourth Proportional to 33,315.40, 45,984.90 and 21,993.16

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Solution

The fourth proportional to 33,315.40, 45,984.90 and 21,993.16 is: 30,356.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,315.40 : 45,984.90 = 21,993.16 : x
  2. Step 2: Convert to fraction form
    33,315.40/45,984.90 = 21,993.16/x
  3. Step 3: Cross multiply
    33,315.40x = 45,984.90 × 21,993.16
  4. Step 4: Simplify right side
    33,315.40x = 1,011,353,263.28
  5. Step 5: Solve for x
    x = 1,011,353,263.28/33,315.40
  6. Step 6: Final answer
    x = 30,356.93

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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.