Home / 21,661.16-29,888.49-12,586.93

Finding the Fourth Proportional to 21,661.16, 29,888.49 and 12,586.93

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Solution

The fourth proportional to 21,661.16, 29,888.49 and 12,586.93 is: 17,367.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.16 : 29,888.49 = 12,586.93 : x
  2. Step 2: Convert to fraction form
    21,661.16/29,888.49 = 12,586.93/x
  3. Step 3: Cross multiply
    21,661.16x = 29,888.49 × 12,586.93
  4. Step 4: Simplify right side
    21,661.16x = 376,204,303.92
  5. Step 5: Solve for x
    x = 376,204,303.92/21,661.16
  6. Step 6: Final answer
    x = 17,367.69

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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.