Home / 15,316.88-21,136.88-8,603.24

Finding the Fourth Proportional to 15,316.88, 21,136.88 and 8,603.24

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Solution

The fourth proportional to 15,316.88, 21,136.88 and 8,603.24 is: 11,872.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.88 : 21,136.88 = 8,603.24 : x
  2. Step 2: Convert to fraction form
    15,316.88/21,136.88 = 8,603.24/x
  3. Step 3: Cross multiply
    15,316.88x = 21,136.88 × 8,603.24
  4. Step 4: Simplify right side
    15,316.88x = 181,845,567.31
  5. Step 5: Solve for x
    x = 181,845,567.31/15,316.88
  6. Step 6: Final answer
    x = 11,872.24

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Similar ratio
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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.