Home / 21,890.04-30,200.76-12,456.24

Finding the Fourth Proportional to 21,890.04, 30,200.76 and 12,456.24

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Solution

The fourth proportional to 21,890.04, 30,200.76 and 12,456.24 is: 17,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.04 : 30,200.76 = 12,456.24 : x
  2. Step 2: Convert to fraction form
    21,890.04/30,200.76 = 12,456.24/x
  3. Step 3: Cross multiply
    21,890.04x = 30,200.76 × 12,456.24
  4. Step 4: Simplify right side
    21,890.04x = 376,187,914.74
  5. Step 5: Solve for x
    x = 376,187,914.74/21,890.04
  6. Step 6: Final answer
    x = 17,185.35

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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.