Home / 28,135.50-38,826.99-15,561.06

Finding the Fourth Proportional to 28,135.50, 38,826.99 and 15,561.06

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Solution

The fourth proportional to 28,135.50, 38,826.99 and 15,561.06 is: 21,474.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.50 : 38,826.99 = 15,561.06 : x
  2. Step 2: Convert to fraction form
    28,135.50/38,826.99 = 15,561.06/x
  3. Step 3: Cross multiply
    28,135.50x = 38,826.99 × 15,561.06
  4. Step 4: Simplify right side
    28,135.50x = 604,189,121.01
  5. Step 5: Solve for x
    x = 604,189,121.01/28,135.50
  6. Step 6: Final answer
    x = 21,474.26

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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.