Home / 39,218.34-58,779.32-18,129.86

Finding the Fourth Proportional to 39,218.34, 58,779.32 and 18,129.86

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Solution

The fourth proportional to 39,218.34, 58,779.32 and 18,129.86 is: 27,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,218.34 : 58,779.32 = 18,129.86 : x
  2. Step 2: Convert to fraction form
    39,218.34/58,779.32 = 18,129.86/x
  3. Step 3: Cross multiply
    39,218.34x = 58,779.32 × 18,129.86
  4. Step 4: Simplify right side
    39,218.34x = 1,065,660,457.95
  5. Step 5: Solve for x
    x = 1,065,660,457.95/39,218.34
  6. Step 6: Final answer
    x = 27,172.50

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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.