Home / 15,615.27-21,548.75-8,541.45

Finding the Fourth Proportional to 15,615.27, 21,548.75 and 8,541.45

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Solution

The fourth proportional to 15,615.27, 21,548.75 and 8,541.45 is: 11,787.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.27 : 21,548.75 = 8,541.45 : x
  2. Step 2: Convert to fraction form
    15,615.27/21,548.75 = 8,541.45/x
  3. Step 3: Cross multiply
    15,615.27x = 21,548.75 × 8,541.45
  4. Step 4: Simplify right side
    15,615.27x = 184,057,527.98
  5. Step 5: Solve for x
    x = 184,057,527.98/15,615.27
  6. Step 6: Final answer
    x = 11,787.02

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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.