Home / 28,935.71-39,944.93-21,768.36

Finding the Fourth Proportional to 28,935.71, 39,944.93 and 21,768.36

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Solution

The fourth proportional to 28,935.71, 39,944.93 and 21,768.36 is: 30,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,935.71 : 39,944.93 = 21,768.36 : x
  2. Step 2: Convert to fraction form
    28,935.71/39,944.93 = 21,768.36/x
  3. Step 3: Cross multiply
    28,935.71x = 39,944.93 × 21,768.36
  4. Step 4: Simplify right side
    28,935.71x = 869,535,531.35
  5. Step 5: Solve for x
    x = 869,535,531.35/28,935.71
  6. Step 6: Final answer
    x = 30,050.60

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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.