Home / 28,288.14-39,070.44-18,840.30

Finding the Fourth Proportional to 28,288.14, 39,070.44 and 18,840.30

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Solution

The fourth proportional to 28,288.14, 39,070.44 and 18,840.30 is: 26,021.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.14 : 39,070.44 = 18,840.30 : x
  2. Step 2: Convert to fraction form
    28,288.14/39,070.44 = 18,840.30/x
  3. Step 3: Cross multiply
    28,288.14x = 39,070.44 × 18,840.30
  4. Step 4: Simplify right side
    28,288.14x = 736,098,810.73
  5. Step 5: Solve for x
    x = 736,098,810.73/28,288.14
  6. Step 6: Final answer
    x = 26,021.46

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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.