Home / 28,108.76-38,790.24-15,533.52

Finding the Fourth Proportional to 28,108.76, 38,790.24 and 15,533.52

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Solution

The fourth proportional to 28,108.76, 38,790.24 and 15,533.52 is: 21,436.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.76 : 38,790.24 = 15,533.52 : x
  2. Step 2: Convert to fraction form
    28,108.76/38,790.24 = 15,533.52/x
  3. Step 3: Cross multiply
    28,108.76x = 38,790.24 × 15,533.52
  4. Step 4: Simplify right side
    28,108.76x = 602,548,968.84
  5. Step 5: Solve for x
    x = 602,548,968.84/28,108.76
  6. Step 6: Final answer
    x = 21,436.34

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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.