Home / 20,124.34-27,772.30-11,171.98

Finding the Fourth Proportional to 20,124.34, 27,772.30 and 11,171.98

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Solution

The fourth proportional to 20,124.34, 27,772.30 and 11,171.98 is: 15,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.34 : 27,772.30 = 11,171.98 : x
  2. Step 2: Convert to fraction form
    20,124.34/27,772.30 = 11,171.98/x
  3. Step 3: Cross multiply
    20,124.34x = 27,772.30 × 11,171.98
  4. Step 4: Simplify right side
    20,124.34x = 310,271,628.83
  5. Step 5: Solve for x
    x = 310,271,628.83/20,124.34
  6. Step 6: Final answer
    x = 15,417.73

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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.