Home / 15,287.69-21,088.46-9,620.33

Finding the Fourth Proportional to 15,287.69, 21,088.46 and 9,620.33

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Solution

The fourth proportional to 15,287.69, 21,088.46 and 9,620.33 is: 13,270.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.69 : 21,088.46 = 9,620.33 : x
  2. Step 2: Convert to fraction form
    15,287.69/21,088.46 = 9,620.33/x
  3. Step 3: Cross multiply
    15,287.69x = 21,088.46 × 9,620.33
  4. Step 4: Simplify right side
    15,287.69x = 202,877,790.85
  5. Step 5: Solve for x
    x = 202,877,790.85/15,287.69
  6. Step 6: Final answer
    x = 13,270.67

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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.