Home / 21,431.43-29,570.59-12,934.93

Finding the Fourth Proportional to 21,431.43, 29,570.59 and 12,934.93

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Solution

The fourth proportional to 21,431.43, 29,570.59 and 12,934.93 is: 17,847.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.43 : 29,570.59 = 12,934.93 : x
  2. Step 2: Convert to fraction form
    21,431.43/29,570.59 = 12,934.93/x
  3. Step 3: Cross multiply
    21,431.43x = 29,570.59 × 12,934.93
  4. Step 4: Simplify right side
    21,431.43x = 382,493,511.71
  5. Step 5: Solve for x
    x = 382,493,511.71/21,431.43
  6. Step 6: Final answer
    x = 17,847.32

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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.