Home / 28,695.70-39,586.40-19,140

Finding the Fourth Proportional to 28,695.70, 39,586.40 and 19,140

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Solution

The fourth proportional to 28,695.70, 39,586.40 and 19,140 is: 26,404.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,695.70 : 39,586.40 = 19,140 : x
  2. Step 2: Convert to fraction form
    28,695.70/39,586.40 = 19,140/x
  3. Step 3: Cross multiply
    28,695.70x = 39,586.40 × 19,140
  4. Step 4: Simplify right side
    28,695.70x = 757,683,696
  5. Step 5: Solve for x
    x = 757,683,696/28,695.70
  6. Step 6: Final answer
    x = 26,404.08

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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.