Home / 28,453.06-42,668.65-19,661.32

Finding the Fourth Proportional to 28,453.06, 42,668.65 and 19,661.32

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Solution

The fourth proportional to 28,453.06, 42,668.65 and 19,661.32 is: 29,484.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.06 : 42,668.65 = 19,661.32 : x
  2. Step 2: Convert to fraction form
    28,453.06/42,668.65 = 19,661.32/x
  3. Step 3: Cross multiply
    28,453.06x = 42,668.65 × 19,661.32
  4. Step 4: Simplify right side
    28,453.06x = 838,921,899.52
  5. Step 5: Solve for x
    x = 838,921,899.52/28,453.06
  6. Step 6: Final answer
    x = 29,484.42

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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.