Home / 28,570.66-42,883.63-13,789.98

Finding the Fourth Proportional to 28,570.66, 42,883.63 and 13,789.98

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Solution

The fourth proportional to 28,570.66, 42,883.63 and 13,789.98 is: 20,698.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.66 : 42,883.63 = 13,789.98 : x
  2. Step 2: Convert to fraction form
    28,570.66/42,883.63 = 13,789.98/x
  3. Step 3: Cross multiply
    28,570.66x = 42,883.63 × 13,789.98
  4. Step 4: Simplify right side
    28,570.66x = 591,364,400.03
  5. Step 5: Solve for x
    x = 591,364,400.03/28,570.66
  6. Step 6: Final answer
    x = 20,698.31

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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.