Home / 20,588.58-30,618-19,932.48

Finding the Fourth Proportional to 20,588.58, 30,618 and 19,932.48

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Solution

The fourth proportional to 20,588.58, 30,618 and 19,932.48 is: 29,642.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.58 : 30,618 = 19,932.48 : x
  2. Step 2: Convert to fraction form
    20,588.58/30,618 = 19,932.48/x
  3. Step 3: Cross multiply
    20,588.58x = 30,618 × 19,932.48
  4. Step 4: Simplify right side
    20,588.58x = 610,292,672.64
  5. Step 5: Solve for x
    x = 610,292,672.64/20,588.58
  6. Step 6: Final answer
    x = 29,642.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.