Home / 21,437.69-29,567.75-18,780.48

Finding the Fourth Proportional to 21,437.69, 29,567.75 and 18,780.48

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Solution

The fourth proportional to 21,437.69, 29,567.75 and 18,780.48 is: 25,902.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,437.69 : 29,567.75 = 18,780.48 : x
  2. Step 2: Convert to fraction form
    21,437.69/29,567.75 = 18,780.48/x
  3. Step 3: Cross multiply
    21,437.69x = 29,567.75 × 18,780.48
  4. Step 4: Simplify right side
    21,437.69x = 555,296,443.62
  5. Step 5: Solve for x
    x = 555,296,443.62/21,437.69
  6. Step 6: Final answer
    x = 25,902.82

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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.