Home / 21,541.04-29,730.84-12,109.04

Finding the Fourth Proportional to 21,541.04, 29,730.84 and 12,109.04

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Solution

The fourth proportional to 21,541.04, 29,730.84 and 12,109.04 is: 16,712.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.04 : 29,730.84 = 12,109.04 : x
  2. Step 2: Convert to fraction form
    21,541.04/29,730.84 = 12,109.04/x
  3. Step 3: Cross multiply
    21,541.04x = 29,730.84 × 12,109.04
  4. Step 4: Simplify right side
    21,541.04x = 360,011,930.79
  5. Step 5: Solve for x
    x = 360,011,930.79/21,541.04
  6. Step 6: Final answer
    x = 16,712.84

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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.