Home / 9,900.84-13,663.16-5,424.66

Finding the Fourth Proportional to 9,900.84, 13,663.16 and 5,424.66

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Solution

The fourth proportional to 9,900.84, 13,663.16 and 5,424.66 is: 7,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.84 : 13,663.16 = 5,424.66 : x
  2. Step 2: Convert to fraction form
    9,900.84/13,663.16 = 5,424.66/x
  3. Step 3: Cross multiply
    9,900.84x = 13,663.16 × 5,424.66
  4. Step 4: Simplify right side
    9,900.84x = 74,117,970.40
  5. Step 5: Solve for x
    x = 74,117,970.40/9,900.84
  6. Step 6: Final answer
    x = 7,486.03

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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.