Home / 20,702.93-28,570.01-11,271.48

Finding the Fourth Proportional to 20,702.93, 28,570.01 and 11,271.48

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Solution

The fourth proportional to 20,702.93, 28,570.01 and 11,271.48 is: 15,554.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.93 : 28,570.01 = 11,271.48 : x
  2. Step 2: Convert to fraction form
    20,702.93/28,570.01 = 11,271.48/x
  3. Step 3: Cross multiply
    20,702.93x = 28,570.01 × 11,271.48
  4. Step 4: Simplify right side
    20,702.93x = 322,026,239.96
  5. Step 5: Solve for x
    x = 322,026,239.96/20,702.93
  6. Step 6: Final answer
    x = 15,554.63

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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.