Home / 28,172.50-38,878.32-15,597.52

Finding the Fourth Proportional to 28,172.50, 38,878.32 and 15,597.52

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Solution

The fourth proportional to 28,172.50, 38,878.32 and 15,597.52 is: 21,524.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.50 : 38,878.32 = 15,597.52 : x
  2. Step 2: Convert to fraction form
    28,172.50/38,878.32 = 15,597.52/x
  3. Step 3: Cross multiply
    28,172.50x = 38,878.32 × 15,597.52
  4. Step 4: Simplify right side
    28,172.50x = 606,405,373.77
  5. Step 5: Solve for x
    x = 606,405,373.77/28,172.50
  6. Step 6: Final answer
    x = 21,524.73

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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.