Home / 15,497.99-21,379.70-9,205.91

Finding the Fourth Proportional to 15,497.99, 21,379.70 and 9,205.91

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Solution

The fourth proportional to 15,497.99, 21,379.70 and 9,205.91 is: 12,699.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.99 : 21,379.70 = 9,205.91 : x
  2. Step 2: Convert to fraction form
    15,497.99/21,379.70 = 9,205.91/x
  3. Step 3: Cross multiply
    15,497.99x = 21,379.70 × 9,205.91
  4. Step 4: Simplify right side
    15,497.99x = 196,819,510.14
  5. Step 5: Solve for x
    x = 196,819,510.14/15,497.99
  6. Step 6: Final answer
    x = 12,699.68

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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.