Home / 28,531.77-39,374.67-15,611.82

Finding the Fourth Proportional to 28,531.77, 39,374.67 and 15,611.82

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Solution

The fourth proportional to 28,531.77, 39,374.67 and 15,611.82 is: 21,544.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.77 : 39,374.67 = 15,611.82 : x
  2. Step 2: Convert to fraction form
    28,531.77/39,374.67 = 15,611.82/x
  3. Step 3: Cross multiply
    28,531.77x = 39,374.67 × 15,611.82
  4. Step 4: Simplify right side
    28,531.77x = 614,710,260.60
  5. Step 5: Solve for x
    x = 614,710,260.60/28,531.77
  6. Step 6: Final answer
    x = 21,544.76

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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.