Home / 42,876.09-64,336.07-20,412.16

Finding the Fourth Proportional to 42,876.09, 64,336.07 and 20,412.16

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Solution

The fourth proportional to 42,876.09, 64,336.07 and 20,412.16 is: 30,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,876.09 : 64,336.07 = 20,412.16 : x
  2. Step 2: Convert to fraction form
    42,876.09/64,336.07 = 20,412.16/x
  3. Step 3: Cross multiply
    42,876.09x = 64,336.07 × 20,412.16
  4. Step 4: Simplify right side
    42,876.09x = 1,313,237,891.71
  5. Step 5: Solve for x
    x = 1,313,237,891.71/42,876.09
  6. Step 6: Final answer
    x = 30,628.68

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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.