Home / 15,529.08-21,429.99-8,455.49

Finding the Fourth Proportional to 15,529.08, 21,429.99 and 8,455.49

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Solution

The fourth proportional to 15,529.08, 21,429.99 and 8,455.49 is: 11,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.08 : 21,429.99 = 8,455.49 : x
  2. Step 2: Convert to fraction form
    15,529.08/21,429.99 = 8,455.49/x
  3. Step 3: Cross multiply
    15,529.08x = 21,429.99 × 8,455.49
  4. Step 4: Simplify right side
    15,529.08x = 181,201,066.15
  5. Step 5: Solve for x
    x = 181,201,066.15/15,529.08
  6. Step 6: Final answer
    x = 11,668.50

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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.