Home / 42,859.63-64,291.29-13,278.03

Finding the Fourth Proportional to 42,859.63, 64,291.29 and 13,278.03

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Solution

The fourth proportional to 42,859.63, 64,291.29 and 13,278.03 is: 19,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,859.63 : 64,291.29 = 13,278.03 : x
  2. Step 2: Convert to fraction form
    42,859.63/64,291.29 = 13,278.03/x
  3. Step 3: Cross multiply
    42,859.63x = 64,291.29 × 13,278.03
  4. Step 4: Simplify right side
    42,859.63x = 853,661,386.47
  5. Step 5: Solve for x
    x = 853,661,386.47/42,859.63
  6. Step 6: Final answer
    x = 19,917.61

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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.