Home / 9,919.21-13,688.53-5,443.00

Finding the Fourth Proportional to 9,919.21, 13,688.53 and 5,443.00

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Solution

The fourth proportional to 9,919.21, 13,688.53 and 5,443.00 is: 7,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.21 : 13,688.53 = 5,443.00 : x
  2. Step 2: Convert to fraction form
    9,919.21/13,688.53 = 5,443.00/x
  3. Step 3: Cross multiply
    9,919.21x = 13,688.53 × 5,443.00
  4. Step 4: Simplify right side
    9,919.21x = 74,506,620.96
  5. Step 5: Solve for x
    x = 74,506,620.96/9,919.21
  6. Step 6: Final answer
    x = 7,511.35

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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.