Home / 20,702.36-28,570.04-11,750.24

Finding the Fourth Proportional to 20,702.36, 28,570.04 and 11,750.24

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Solution

The fourth proportional to 20,702.36, 28,570.04 and 11,750.24 is: 16,215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.36 : 28,570.04 = 11,750.24 : x
  2. Step 2: Convert to fraction form
    20,702.36/28,570.04 = 11,750.24/x
  3. Step 3: Cross multiply
    20,702.36x = 28,570.04 × 11,750.24
  4. Step 4: Simplify right side
    20,702.36x = 335,704,826.81
  5. Step 5: Solve for x
    x = 335,704,826.81/20,702.36
  6. Step 6: Final answer
    x = 16,215.78

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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.