Home / 15,319.54-21,121.58-10,005.94

Finding the Fourth Proportional to 15,319.54, 21,121.58 and 10,005.94

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Solution

The fourth proportional to 15,319.54, 21,121.58 and 10,005.94 is: 13,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.54 : 21,121.58 = 10,005.94 : x
  2. Step 2: Convert to fraction form
    15,319.54/21,121.58 = 10,005.94/x
  3. Step 3: Cross multiply
    15,319.54x = 21,121.58 × 10,005.94
  4. Step 4: Simplify right side
    15,319.54x = 211,341,262.19
  5. Step 5: Solve for x
    x = 211,341,262.19/15,319.54
  6. Step 6: Final answer
    x = 13,795.54

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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.