Home / 15,285.09-21,064.89-11,922.60

Finding the Fourth Proportional to 15,285.09, 21,064.89 and 11,922.60

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Solution

The fourth proportional to 15,285.09, 21,064.89 and 11,922.60 is: 16,430.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.09 : 21,064.89 = 11,922.60 : x
  2. Step 2: Convert to fraction form
    15,285.09/21,064.89 = 11,922.60/x
  3. Step 3: Cross multiply
    15,285.09x = 21,064.89 × 11,922.60
  4. Step 4: Simplify right side
    15,285.09x = 251,148,257.51
  5. Step 5: Solve for x
    x = 251,148,257.51/15,285.09
  6. Step 6: Final answer
    x = 16,430.93

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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.