Home / 22,283.45-30,746.16-12,720.28

Finding the Fourth Proportional to 22,283.45, 30,746.16 and 12,720.28

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Solution

The fourth proportional to 22,283.45, 30,746.16 and 12,720.28 is: 17,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,283.45 : 30,746.16 = 12,720.28 : x
  2. Step 2: Convert to fraction form
    22,283.45/30,746.16 = 12,720.28/x
  3. Step 3: Cross multiply
    22,283.45x = 30,746.16 × 12,720.28
  4. Step 4: Simplify right side
    22,283.45x = 391,099,764.12
  5. Step 5: Solve for x
    x = 391,099,764.12/22,283.45
  6. Step 6: Final answer
    x = 17,551.13

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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.