Home / 21,790.62-30,070.17-12,358.98

Finding the Fourth Proportional to 21,790.62, 30,070.17 and 12,358.98

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Solution

The fourth proportional to 21,790.62, 30,070.17 and 12,358.98 is: 17,054.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.62 : 30,070.17 = 12,358.98 : x
  2. Step 2: Convert to fraction form
    21,790.62/30,070.17 = 12,358.98/x
  3. Step 3: Cross multiply
    21,790.62x = 30,070.17 × 12,358.98
  4. Step 4: Simplify right side
    21,790.62x = 371,636,629.63
  5. Step 5: Solve for x
    x = 371,636,629.63/21,790.62
  6. Step 6: Final answer
    x = 17,054.89

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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.