Home / 21,455.96-29,607.59-12,022.70

Finding the Fourth Proportional to 21,455.96, 29,607.59 and 12,022.70

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Solution

The fourth proportional to 21,455.96, 29,607.59 and 12,022.70 is: 16,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.96 : 29,607.59 = 12,022.70 : x
  2. Step 2: Convert to fraction form
    21,455.96/29,607.59 = 12,022.70/x
  3. Step 3: Cross multiply
    21,455.96x = 29,607.59 × 12,022.70
  4. Step 4: Simplify right side
    21,455.96x = 355,962,964.14
  5. Step 5: Solve for x
    x = 355,962,964.14/21,455.96
  6. Step 6: Final answer
    x = 16,590.40

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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.