Home / 21,809.04-30,095.64-12,377.04

Finding the Fourth Proportional to 21,809.04, 30,095.64 and 12,377.04

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Solution

The fourth proportional to 21,809.04, 30,095.64 and 12,377.04 is: 17,079.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.04 : 30,095.64 = 12,377.04 : x
  2. Step 2: Convert to fraction form
    21,809.04/30,095.64 = 12,377.04/x
  3. Step 3: Cross multiply
    21,809.04x = 30,095.64 × 12,377.04
  4. Step 4: Simplify right side
    21,809.04x = 372,494,940.11
  5. Step 5: Solve for x
    x = 372,494,940.11/21,809.04
  6. Step 6: Final answer
    x = 17,079.84

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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.