Home / 15,615.07-21,548.34-8,541.34

Finding the Fourth Proportional to 15,615.07, 21,548.34 and 8,541.34

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Solution

The fourth proportional to 15,615.07, 21,548.34 and 8,541.34 is: 11,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.07 : 21,548.34 = 8,541.34 : x
  2. Step 2: Convert to fraction form
    15,615.07/21,548.34 = 8,541.34/x
  3. Step 3: Cross multiply
    15,615.07x = 21,548.34 × 8,541.34
  4. Step 4: Simplify right side
    15,615.07x = 184,051,698.38
  5. Step 5: Solve for x
    x = 184,051,698.38/15,615.07
  6. Step 6: Final answer
    x = 11,786.80

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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.