Home / 28,511.61-39,344.31-15,764.03

Finding the Fourth Proportional to 28,511.61, 39,344.31 and 15,764.03

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Solution

The fourth proportional to 28,511.61, 39,344.31 and 15,764.03 is: 21,753.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.61 : 39,344.31 = 15,764.03 : x
  2. Step 2: Convert to fraction form
    28,511.61/39,344.31 = 15,764.03/x
  3. Step 3: Cross multiply
    28,511.61x = 39,344.31 × 15,764.03
  4. Step 4: Simplify right side
    28,511.61x = 620,224,686.45
  5. Step 5: Solve for x
    x = 620,224,686.45/28,511.61
  6. Step 6: Final answer
    x = 21,753.41

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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.