Home / 15,830.58-21,848.46-9,115.54

Finding the Fourth Proportional to 15,830.58, 21,848.46 and 9,115.54

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Solution

The fourth proportional to 15,830.58, 21,848.46 and 9,115.54 is: 12,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,830.58 : 21,848.46 = 9,115.54 : x
  2. Step 2: Convert to fraction form
    15,830.58/21,848.46 = 9,115.54/x
  3. Step 3: Cross multiply
    15,830.58x = 21,848.46 × 9,115.54
  4. Step 4: Simplify right side
    15,830.58x = 199,160,511.07
  5. Step 5: Solve for x
    x = 199,160,511.07/15,830.58
  6. Step 6: Final answer
    x = 12,580.75

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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.