Home / 10,040.40-13,855.62-5,564.16

Finding the Fourth Proportional to 10,040.40, 13,855.62 and 5,564.16

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Solution

The fourth proportional to 10,040.40, 13,855.62 and 5,564.16 is: 7,678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,040.40 : 13,855.62 = 5,564.16 : x
  2. Step 2: Convert to fraction form
    10,040.40/13,855.62 = 5,564.16/x
  3. Step 3: Cross multiply
    10,040.40x = 13,855.62 × 5,564.16
  4. Step 4: Simplify right side
    10,040.40x = 77,094,886.58
  5. Step 5: Solve for x
    x = 77,094,886.58/10,040.40
  6. Step 6: Final answer
    x = 7,678.47

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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.