Home / 39,216.09-58,827.78-12,921.06

Finding the Fourth Proportional to 39,216.09, 58,827.78 and 12,921.06

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Solution

The fourth proportional to 39,216.09, 58,827.78 and 12,921.06 is: 19,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.09 : 58,827.78 = 12,921.06 : x
  2. Step 2: Convert to fraction form
    39,216.09/58,827.78 = 12,921.06/x
  3. Step 3: Cross multiply
    39,216.09x = 58,827.78 × 12,921.06
  4. Step 4: Simplify right side
    39,216.09x = 760,117,275.05
  5. Step 5: Solve for x
    x = 760,117,275.05/39,216.09
  6. Step 6: Final answer
    x = 19,382.79

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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.