Home / 42,784.39-64,176.45-11,619.64

Finding the Fourth Proportional to 42,784.39, 64,176.45 and 11,619.64

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Solution

The fourth proportional to 42,784.39, 64,176.45 and 11,619.64 is: 17,429.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,784.39 : 64,176.45 = 11,619.64 : x
  2. Step 2: Convert to fraction form
    42,784.39/64,176.45 = 11,619.64/x
  3. Step 3: Cross multiply
    42,784.39x = 64,176.45 × 11,619.64
  4. Step 4: Simplify right side
    42,784.39x = 745,707,245.48
  5. Step 5: Solve for x
    x = 745,707,245.48/42,784.39
  6. Step 6: Final answer
    x = 17,429.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.