Home / 28,603.59-39,471.60-15,855.96

Finding the Fourth Proportional to 28,603.59, 39,471.60 and 15,855.96

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Solution

The fourth proportional to 28,603.59, 39,471.60 and 15,855.96 is: 21,880.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.59 : 39,471.60 = 15,855.96 : x
  2. Step 2: Convert to fraction form
    28,603.59/39,471.60 = 15,855.96/x
  3. Step 3: Cross multiply
    28,603.59x = 39,471.60 × 15,855.96
  4. Step 4: Simplify right side
    28,603.59x = 625,860,110.74
  5. Step 5: Solve for x
    x = 625,860,110.74/28,603.59
  6. Step 6: Final answer
    x = 21,880.47

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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.