Home / 30,072.21-45,084.02-12,555.15

Finding the Fourth Proportional to 30,072.21, 45,084.02 and 12,555.15

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Solution

The fourth proportional to 30,072.21, 45,084.02 and 12,555.15 is: 18,822.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,072.21 : 45,084.02 = 12,555.15 : x
  2. Step 2: Convert to fraction form
    30,072.21/45,084.02 = 12,555.15/x
  3. Step 3: Cross multiply
    30,072.21x = 45,084.02 × 12,555.15
  4. Step 4: Simplify right side
    30,072.21x = 566,036,570.93
  5. Step 5: Solve for x
    x = 566,036,570.93/30,072.21
  6. Step 6: Final answer
    x = 18,822.58

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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.