Home / 15,615.08-21,548.36-8,541.35

Finding the Fourth Proportional to 15,615.08, 21,548.36 and 8,541.35

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Solution

The fourth proportional to 15,615.08, 21,548.36 and 8,541.35 is: 11,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.08 : 21,548.36 = 8,541.35 : x
  2. Step 2: Convert to fraction form
    15,615.08/21,548.36 = 8,541.35/x
  3. Step 3: Cross multiply
    15,615.08x = 21,548.36 × 8,541.35
  4. Step 4: Simplify right side
    15,615.08x = 184,052,084.69
  5. Step 5: Solve for x
    x = 184,052,084.69/15,615.08
  6. Step 6: Final answer
    x = 11,786.82

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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.