Home / 28,108.68-38,788.72-15,533.16

Finding the Fourth Proportional to 28,108.68, 38,788.72 and 15,533.16

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Solution

The fourth proportional to 28,108.68, 38,788.72 and 15,533.16 is: 21,435.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.68 : 38,788.72 = 15,533.16 : x
  2. Step 2: Convert to fraction form
    28,108.68/38,788.72 = 15,533.16/x
  3. Step 3: Cross multiply
    28,108.68x = 38,788.72 × 15,533.16
  4. Step 4: Simplify right side
    28,108.68x = 602,511,393.96
  5. Step 5: Solve for x
    x = 602,511,393.96/28,108.68
  6. Step 6: Final answer
    x = 21,435.07

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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.