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Finding the Fourth Proportional to 18,779.70, 25,888.34 and 14,295.62

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Solution

The fourth proportional to 18,779.70, 25,888.34 and 14,295.62 is: 19,706.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.70 : 25,888.34 = 14,295.62 : x
  2. Step 2: Convert to fraction form
    18,779.70/25,888.34 = 14,295.62/x
  3. Step 3: Cross multiply
    18,779.70x = 25,888.34 × 14,295.62
  4. Step 4: Simplify right side
    18,779.70x = 370,089,871.07
  5. Step 5: Solve for x
    x = 370,089,871.07/18,779.70
  6. Step 6: Final answer
    x = 19,706.91

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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.