Home / 20,354.74-28,089.83-11,856.64

Finding the Fourth Proportional to 20,354.74, 28,089.83 and 11,856.64

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Solution

The fourth proportional to 20,354.74, 28,089.83 and 11,856.64 is: 16,362.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.74 : 28,089.83 = 11,856.64 : x
  2. Step 2: Convert to fraction form
    20,354.74/28,089.83 = 11,856.64/x
  3. Step 3: Cross multiply
    20,354.74x = 28,089.83 × 11,856.64
  4. Step 4: Simplify right side
    20,354.74x = 333,050,802.24
  5. Step 5: Solve for x
    x = 333,050,802.24/20,354.74
  6. Step 6: Final answer
    x = 16,362.33

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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.