Home / 28,137.52-38,830.56-15,563.08

Finding the Fourth Proportional to 28,137.52, 38,830.56 and 15,563.08

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Solution

The fourth proportional to 28,137.52, 38,830.56 and 15,563.08 is: 21,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.52 : 38,830.56 = 15,563.08 : x
  2. Step 2: Convert to fraction form
    28,137.52/38,830.56 = 15,563.08/x
  3. Step 3: Cross multiply
    28,137.52x = 38,830.56 × 15,563.08
  4. Step 4: Simplify right side
    28,137.52x = 604,323,111.72
  5. Step 5: Solve for x
    x = 604,323,111.72/28,137.52
  6. Step 6: Final answer
    x = 21,477.48

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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.