Home / 15,458.29-21,316.31-9,169.45

Finding the Fourth Proportional to 15,458.29, 21,316.31 and 9,169.45

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Solution

The fourth proportional to 15,458.29, 21,316.31 and 9,169.45 is: 12,644.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.29 : 21,316.31 = 9,169.45 : x
  2. Step 2: Convert to fraction form
    15,458.29/21,316.31 = 9,169.45/x
  3. Step 3: Cross multiply
    15,458.29x = 21,316.31 × 9,169.45
  4. Step 4: Simplify right side
    15,458.29x = 195,458,792.88
  5. Step 5: Solve for x
    x = 195,458,792.88/15,458.29
  6. Step 6: Final answer
    x = 12,644.27

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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.