Home / 14,006.25-21,009.78-3,618

Finding the Fourth Proportional to 14,006.25, 21,009.78 and 3,618

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Solution

The fourth proportional to 14,006.25, 21,009.78 and 3,618 is: 5,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,006.25 : 21,009.78 = 3,618 : x
  2. Step 2: Convert to fraction form
    14,006.25/21,009.78 = 3,618/x
  3. Step 3: Cross multiply
    14,006.25x = 21,009.78 × 3,618
  4. Step 4: Simplify right side
    14,006.25x = 76,013,384.04
  5. Step 5: Solve for x
    x = 76,013,384.04/14,006.25
  6. Step 6: Final answer
    x = 5,427.10

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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.