Home / 43,218.63-64,827.96-13,638.77

Finding the Fourth Proportional to 43,218.63, 64,827.96 and 13,638.77

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Solution

The fourth proportional to 43,218.63, 64,827.96 and 13,638.77 is: 20,458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,218.63 : 64,827.96 = 13,638.77 : x
  2. Step 2: Convert to fraction form
    43,218.63/64,827.96 = 13,638.77/x
  3. Step 3: Cross multiply
    43,218.63x = 64,827.96 × 13,638.77
  4. Step 4: Simplify right side
    43,218.63x = 884,173,567.82
  5. Step 5: Solve for x
    x = 884,173,567.82/43,218.63
  6. Step 6: Final answer
    x = 20,458.16

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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.