Home / 15,748.08-21,712.08-12,905.04

Finding the Fourth Proportional to 15,748.08, 21,712.08 and 12,905.04

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Solution

The fourth proportional to 15,748.08, 21,712.08 and 12,905.04 is: 17,792.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.08 : 21,712.08 = 12,905.04 : x
  2. Step 2: Convert to fraction form
    15,748.08/21,712.08 = 12,905.04/x
  3. Step 3: Cross multiply
    15,748.08x = 21,712.08 × 12,905.04
  4. Step 4: Simplify right side
    15,748.08x = 280,195,260.88
  5. Step 5: Solve for x
    x = 280,195,260.88/15,748.08
  6. Step 6: Final answer
    x = 17,792.34

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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.