Home / 22,068.64-30,455.28-12,640.24

Finding the Fourth Proportional to 22,068.64, 30,455.28 and 12,640.24

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Solution

The fourth proportional to 22,068.64, 30,455.28 and 12,640.24 is: 17,443.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,068.64 : 30,455.28 = 12,640.24 : x
  2. Step 2: Convert to fraction form
    22,068.64/30,455.28 = 12,640.24/x
  3. Step 3: Cross multiply
    22,068.64x = 30,455.28 × 12,640.24
  4. Step 4: Simplify right side
    22,068.64x = 384,962,048.47
  5. Step 5: Solve for x
    x = 384,962,048.47/22,068.64
  6. Step 6: Final answer
    x = 17,443.85

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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.