Home / 35,780.96-53,653.23-21,018.74

Finding the Fourth Proportional to 35,780.96, 53,653.23 and 21,018.74

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Solution

The fourth proportional to 35,780.96, 53,653.23 and 21,018.74 is: 31,517.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,780.96 : 53,653.23 = 21,018.74 : x
  2. Step 2: Convert to fraction form
    35,780.96/53,653.23 = 21,018.74/x
  3. Step 3: Cross multiply
    35,780.96x = 53,653.23 × 21,018.74
  4. Step 4: Simplify right side
    35,780.96x = 1,127,723,291.53
  5. Step 5: Solve for x
    x = 1,127,723,291.53/35,780.96
  6. Step 6: Final answer
    x = 31,517.41

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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.