Home / 9,987.53-13,783.59-5,511.75

Finding the Fourth Proportional to 9,987.53, 13,783.59 and 5,511.75

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Solution

The fourth proportional to 9,987.53, 13,783.59 and 5,511.75 is: 7,606.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.53 : 13,783.59 = 5,511.75 : x
  2. Step 2: Convert to fraction form
    9,987.53/13,783.59 = 5,511.75/x
  3. Step 3: Cross multiply
    9,987.53x = 13,783.59 × 5,511.75
  4. Step 4: Simplify right side
    9,987.53x = 75,971,702.18
  5. Step 5: Solve for x
    x = 75,971,702.18/9,987.53
  6. Step 6: Final answer
    x = 7,606.66

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1.5x scale

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.