Home / 15,513.58-21,409.28-8,798.99

Finding the Fourth Proportional to 15,513.58, 21,409.28 and 8,798.99

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Solution

The fourth proportional to 15,513.58, 21,409.28 and 8,798.99 is: 12,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.58 : 21,409.28 = 8,798.99 : x
  2. Step 2: Convert to fraction form
    15,513.58/21,409.28 = 8,798.99/x
  3. Step 3: Cross multiply
    15,513.58x = 21,409.28 × 8,798.99
  4. Step 4: Simplify right side
    15,513.58x = 188,379,922.58
  5. Step 5: Solve for x
    x = 188,379,922.58/15,513.58
  6. Step 6: Final answer
    x = 12,142.90

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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.