Home / 15,518.77-21,416.39-8,804.68

Finding the Fourth Proportional to 15,518.77, 21,416.39 and 8,804.68

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Solution

The fourth proportional to 15,518.77, 21,416.39 and 8,804.68 is: 12,150.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.77 : 21,416.39 = 8,804.68 : x
  2. Step 2: Convert to fraction form
    15,518.77/21,416.39 = 8,804.68/x
  3. Step 3: Cross multiply
    15,518.77x = 21,416.39 × 8,804.68
  4. Step 4: Simplify right side
    15,518.77x = 188,564,363.14
  5. Step 5: Solve for x
    x = 188,564,363.14/15,518.77
  6. Step 6: Final answer
    x = 12,150.73

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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.