Home / 20,898.70-28,840.10-11,467.06

Finding the Fourth Proportional to 20,898.70, 28,840.10 and 11,467.06

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Solution

The fourth proportional to 20,898.70, 28,840.10 and 11,467.06 is: 15,824.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.70 : 28,840.10 = 11,467.06 : x
  2. Step 2: Convert to fraction form
    20,898.70/28,840.10 = 11,467.06/x
  3. Step 3: Cross multiply
    20,898.70x = 28,840.10 × 11,467.06
  4. Step 4: Simplify right side
    20,898.70x = 330,711,157.11
  5. Step 5: Solve for x
    x = 330,711,157.11/20,898.70
  6. Step 6: Final answer
    x = 15,824.48

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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.