Home / 11,121.32-16,681.99-4,547.50

Finding the Fourth Proportional to 11,121.32, 16,681.99 and 4,547.50

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Solution

The fourth proportional to 11,121.32, 16,681.99 and 4,547.50 is: 6,821.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.32 : 16,681.99 = 4,547.50 : x
  2. Step 2: Convert to fraction form
    11,121.32/16,681.99 = 4,547.50/x
  3. Step 3: Cross multiply
    11,121.32x = 16,681.99 × 4,547.50
  4. Step 4: Simplify right side
    11,121.32x = 75,861,349.53
  5. Step 5: Solve for x
    x = 75,861,349.53/11,121.32
  6. Step 6: Final answer
    x = 6,821.25

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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.