Home / 30,300.55-45,450.83-21,443.20

Finding the Fourth Proportional to 30,300.55, 45,450.83 and 21,443.20

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Solution

The fourth proportional to 30,300.55, 45,450.83 and 21,443.20 is: 32,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,300.55 : 45,450.83 = 21,443.20 : x
  2. Step 2: Convert to fraction form
    30,300.55/45,450.83 = 21,443.20/x
  3. Step 3: Cross multiply
    30,300.55x = 45,450.83 × 21,443.20
  4. Step 4: Simplify right side
    30,300.55x = 974,611,130.64
  5. Step 5: Solve for x
    x = 974,611,130.64/30,300.55
  6. Step 6: Final answer
    x = 32,164.80

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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.