Home / 28,105.44-42,162.74-13,127.54

Finding the Fourth Proportional to 28,105.44, 42,162.74 and 13,127.54

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Solution

The fourth proportional to 28,105.44, 42,162.74 and 13,127.54 is: 19,693.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105.44 : 42,162.74 = 13,127.54 : x
  2. Step 2: Convert to fraction form
    28,105.44/42,162.74 = 13,127.54/x
  3. Step 3: Cross multiply
    28,105.44x = 42,162.74 × 13,127.54
  4. Step 4: Simplify right side
    28,105.44x = 553,492,779.41
  5. Step 5: Solve for x
    x = 553,492,779.41/28,105.44
  6. Step 6: Final answer
    x = 19,693.44

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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.