Home / 15,328.91-21,154.87-8,523.69

Finding the Fourth Proportional to 15,328.91, 21,154.87 and 8,523.69

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Solution

The fourth proportional to 15,328.91, 21,154.87 and 8,523.69 is: 11,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.91 : 21,154.87 = 8,523.69 : x
  2. Step 2: Convert to fraction form
    15,328.91/21,154.87 = 8,523.69/x
  3. Step 3: Cross multiply
    15,328.91x = 21,154.87 × 8,523.69
  4. Step 4: Simplify right side
    15,328.91x = 180,317,564.14
  5. Step 5: Solve for x
    x = 180,317,564.14/15,328.91
  6. Step 6: Final answer
    x = 11,763.24

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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.