Home / 15,523.67-21,368.57-13,530.75

Finding the Fourth Proportional to 15,523.67, 21,368.57 and 13,530.75

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Solution

The fourth proportional to 15,523.67, 21,368.57 and 13,530.75 is: 18,625.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.67 : 21,368.57 = 13,530.75 : x
  2. Step 2: Convert to fraction form
    15,523.67/21,368.57 = 13,530.75/x
  3. Step 3: Cross multiply
    15,523.67x = 21,368.57 × 13,530.75
  4. Step 4: Simplify right side
    15,523.67x = 289,132,710.87
  5. Step 5: Solve for x
    x = 289,132,710.87/15,523.67
  6. Step 6: Final answer
    x = 18,625.29

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Double scale
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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.