Home / 15,603.72-21,532.68-8,529.99

Finding the Fourth Proportional to 15,603.72, 21,532.68 and 8,529.99

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Solution

The fourth proportional to 15,603.72, 21,532.68 and 8,529.99 is: 11,771.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.72 : 21,532.68 = 8,529.99 : x
  2. Step 2: Convert to fraction form
    15,603.72/21,532.68 = 8,529.99/x
  3. Step 3: Cross multiply
    15,603.72x = 21,532.68 × 8,529.99
  4. Step 4: Simplify right side
    15,603.72x = 183,673,545.07
  5. Step 5: Solve for x
    x = 183,673,545.07/15,603.72
  6. Step 6: Final answer
    x = 11,771.14

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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.