Home / 20,866.22-31,285.50-11,510.72

Finding the Fourth Proportional to 20,866.22, 31,285.50 and 11,510.72

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Solution

The fourth proportional to 20,866.22, 31,285.50 and 11,510.72 is: 17,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.22 : 31,285.50 = 11,510.72 : x
  2. Step 2: Convert to fraction form
    20,866.22/31,285.50 = 11,510.72/x
  3. Step 3: Cross multiply
    20,866.22x = 31,285.50 × 11,510.72
  4. Step 4: Simplify right side
    20,866.22x = 360,118,630.56
  5. Step 5: Solve for x
    x = 360,118,630.56/20,866.22
  6. Step 6: Final answer
    x = 17,258.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.