Home / 28,740.03-43,120.76-12,940.32

Finding the Fourth Proportional to 28,740.03, 43,120.76 and 12,940.32

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Solution

The fourth proportional to 28,740.03, 43,120.76 and 12,940.32 is: 19,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.03 : 43,120.76 = 12,940.32 : x
  2. Step 2: Convert to fraction form
    28,740.03/43,120.76 = 12,940.32/x
  3. Step 3: Cross multiply
    28,740.03x = 43,120.76 × 12,940.32
  4. Step 4: Simplify right side
    28,740.03x = 557,996,368.34
  5. Step 5: Solve for x
    x = 557,996,368.34/28,740.03
  6. Step 6: Final answer
    x = 19,415.30

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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.