Home / 20,013.12-27,618-11,061.24

Finding the Fourth Proportional to 20,013.12, 27,618 and 11,061.24

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Solution

The fourth proportional to 20,013.12, 27,618 and 11,061.24 is: 15,264.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,013.12 : 27,618 = 11,061.24 : x
  2. Step 2: Convert to fraction form
    20,013.12/27,618 = 11,061.24/x
  3. Step 3: Cross multiply
    20,013.12x = 27,618 × 11,061.24
  4. Step 4: Simplify right side
    20,013.12x = 305,489,326.32
  5. Step 5: Solve for x
    x = 305,489,326.32/20,013.12
  6. Step 6: Final answer
    x = 15,264.45

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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.