Home / 28,032.56-38,639.83-20,466.91

Finding the Fourth Proportional to 28,032.56, 38,639.83 and 20,466.91

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Solution

The fourth proportional to 28,032.56, 38,639.83 and 20,466.91 is: 28,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,032.56 : 38,639.83 = 20,466.91 : x
  2. Step 2: Convert to fraction form
    28,032.56/38,639.83 = 20,466.91/x
  3. Step 3: Cross multiply
    28,032.56x = 38,639.83 × 20,466.91
  4. Step 4: Simplify right side
    28,032.56x = 790,837,775.26
  5. Step 5: Solve for x
    x = 790,837,775.26/28,032.56
  6. Step 6: Final answer
    x = 28,211.40

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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.