Home / 28,456.19-39,269.50-15,880.94

Finding the Fourth Proportional to 28,456.19, 39,269.50 and 15,880.94

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Solution

The fourth proportional to 28,456.19, 39,269.50 and 15,880.94 is: 21,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.19 : 39,269.50 = 15,880.94 : x
  2. Step 2: Convert to fraction form
    28,456.19/39,269.50 = 15,880.94/x
  3. Step 3: Cross multiply
    28,456.19x = 39,269.50 × 15,880.94
  4. Step 4: Simplify right side
    28,456.19x = 623,636,573.33
  5. Step 5: Solve for x
    x = 623,636,573.33/28,456.19
  6. Step 6: Final answer
    x = 21,915.67

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Double scale
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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.