Home / 28,260.50-39,004.89-18,700.57

Finding the Fourth Proportional to 28,260.50, 39,004.89 and 18,700.57

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Solution

The fourth proportional to 28,260.50, 39,004.89 and 18,700.57 is: 25,810.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.50 : 39,004.89 = 18,700.57 : x
  2. Step 2: Convert to fraction form
    28,260.50/39,004.89 = 18,700.57/x
  3. Step 3: Cross multiply
    28,260.50x = 39,004.89 × 18,700.57
  4. Step 4: Simplify right side
    28,260.50x = 729,413,759.61
  5. Step 5: Solve for x
    x = 729,413,759.61/28,260.50
  6. Step 6: Final answer
    x = 25,810.37

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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.