Home / 27,890.89-38,485.56-16,406.33

Finding the Fourth Proportional to 27,890.89, 38,485.56 and 16,406.33

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Solution

The fourth proportional to 27,890.89, 38,485.56 and 16,406.33 is: 22,638.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.89 : 38,485.56 = 16,406.33 : x
  2. Step 2: Convert to fraction form
    27,890.89/38,485.56 = 16,406.33/x
  3. Step 3: Cross multiply
    27,890.89x = 38,485.56 × 16,406.33
  4. Step 4: Simplify right side
    27,890.89x = 631,406,523.14
  5. Step 5: Solve for x
    x = 631,406,523.14/27,890.89
  6. Step 6: Final answer
    x = 22,638.45

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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.