Home / 28,134.78-38,807.70-18,047.25

Finding the Fourth Proportional to 28,134.78, 38,807.70 and 18,047.25

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Solution

The fourth proportional to 28,134.78, 38,807.70 and 18,047.25 is: 24,893.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.78 : 38,807.70 = 18,047.25 : x
  2. Step 2: Convert to fraction form
    28,134.78/38,807.70 = 18,047.25/x
  3. Step 3: Cross multiply
    28,134.78x = 38,807.70 × 18,047.25
  4. Step 4: Simplify right side
    28,134.78x = 700,372,263.83
  5. Step 5: Solve for x
    x = 700,372,263.83/28,134.78
  6. Step 6: Final answer
    x = 24,893.47

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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.