Home / 13,779.01-20,667.79-3,916.99

Finding the Fourth Proportional to 13,779.01, 20,667.79 and 3,916.99

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Solution

The fourth proportional to 13,779.01, 20,667.79 and 3,916.99 is: 5,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.01 : 20,667.79 = 3,916.99 : x
  2. Step 2: Convert to fraction form
    13,779.01/20,667.79 = 3,916.99/x
  3. Step 3: Cross multiply
    13,779.01x = 20,667.79 × 3,916.99
  4. Step 4: Simplify right side
    13,779.01x = 80,955,526.75
  5. Step 5: Solve for x
    x = 80,955,526.75/13,779.01
  6. Step 6: Final answer
    x = 5,875.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.