Home / 13,283.04-18,330.66-7,618

Finding the Fourth Proportional to 13,283.04, 18,330.66 and 7,618

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Solution

The fourth proportional to 13,283.04, 18,330.66 and 7,618 is: 10,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.04 : 18,330.66 = 7,618 : x
  2. Step 2: Convert to fraction form
    13,283.04/18,330.66 = 7,618/x
  3. Step 3: Cross multiply
    13,283.04x = 18,330.66 × 7,618
  4. Step 4: Simplify right side
    13,283.04x = 139,642,967.88
  5. Step 5: Solve for x
    x = 139,642,967.88/13,283.04
  6. Step 6: Final answer
    x = 10,512.88

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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.