Home / 22,187.13-30,618-12,115.54

Finding the Fourth Proportional to 22,187.13, 30,618 and 12,115.54

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Solution

The fourth proportional to 22,187.13, 30,618 and 12,115.54 is: 16,719.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.13 : 30,618 = 12,115.54 : x
  2. Step 2: Convert to fraction form
    22,187.13/30,618 = 12,115.54/x
  3. Step 3: Cross multiply
    22,187.13x = 30,618 × 12,115.54
  4. Step 4: Simplify right side
    22,187.13x = 370,953,603.72
  5. Step 5: Solve for x
    x = 370,953,603.72/22,187.13
  6. Step 6: Final answer
    x = 16,719.31

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Double scale
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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.