Home / 19,855.96-27,403.40-11,358.86

Finding the Fourth Proportional to 19,855.96, 27,403.40 and 11,358.86

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Solution

The fourth proportional to 19,855.96, 27,403.40 and 11,358.86 is: 15,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.96 : 27,403.40 = 11,358.86 : x
  2. Step 2: Convert to fraction form
    19,855.96/27,403.40 = 11,358.86/x
  3. Step 3: Cross multiply
    19,855.96x = 27,403.40 × 11,358.86
  4. Step 4: Simplify right side
    19,855.96x = 311,271,384.12
  5. Step 5: Solve for x
    x = 311,271,384.12/19,855.96
  6. Step 6: Final answer
    x = 15,676.47

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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.