Home / 39,280.64-54,206.72-21,616.64

Finding the Fourth Proportional to 39,280.64, 54,206.72 and 21,616.64

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Solution

The fourth proportional to 39,280.64, 54,206.72 and 21,616.64 is: 29,830.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,280.64 : 54,206.72 = 21,616.64 : x
  2. Step 2: Convert to fraction form
    39,280.64/54,206.72 = 21,616.64/x
  3. Step 3: Cross multiply
    39,280.64x = 54,206.72 × 21,616.64
  4. Step 4: Simplify right side
    39,280.64x = 1,171,767,151.82
  5. Step 5: Solve for x
    x = 1,171,767,151.82/39,280.64
  6. Step 6: Final answer
    x = 29,830.65

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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.