Home / 28,172.32-38,878.08-15,597.76

Finding the Fourth Proportional to 28,172.32, 38,878.08 and 15,597.76

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Solution

The fourth proportional to 28,172.32, 38,878.08 and 15,597.76 is: 21,525.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.32 : 38,878.08 = 15,597.76 : x
  2. Step 2: Convert to fraction form
    28,172.32/38,878.08 = 15,597.76/x
  3. Step 3: Cross multiply
    28,172.32x = 38,878.08 × 15,597.76
  4. Step 4: Simplify right side
    28,172.32x = 606,410,961.10
  5. Step 5: Solve for x
    x = 606,410,961.10/28,172.32
  6. Step 6: Final answer
    x = 21,525.06

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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.