Home / 30,845.90-42,574.37-20,071.79

Finding the Fourth Proportional to 30,845.90, 42,574.37 and 20,071.79

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Solution

The fourth proportional to 30,845.90, 42,574.37 and 20,071.79 is: 27,703.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,845.90 : 42,574.37 = 20,071.79 : x
  2. Step 2: Convert to fraction form
    30,845.90/42,574.37 = 20,071.79/x
  3. Step 3: Cross multiply
    30,845.90x = 42,574.37 × 20,071.79
  4. Step 4: Simplify right side
    30,845.90x = 854,543,814.02
  5. Step 5: Solve for x
    x = 854,543,814.02/30,845.90
  6. Step 6: Final answer
    x = 27,703.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.