Home / 19,760.21-27,269.10-10,808.55

Finding the Fourth Proportional to 19,760.21, 27,269.10 and 10,808.55

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Solution

The fourth proportional to 19,760.21, 27,269.10 and 10,808.55 is: 14,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.21 : 27,269.10 = 10,808.55 : x
  2. Step 2: Convert to fraction form
    19,760.21/27,269.10 = 10,808.55/x
  3. Step 3: Cross multiply
    19,760.21x = 27,269.10 × 10,808.55
  4. Step 4: Simplify right side
    19,760.21x = 294,739,430.81
  5. Step 5: Solve for x
    x = 294,739,430.81/19,760.21
  6. Step 6: Final answer
    x = 14,915.81

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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.