Home / 27,617.94-38,111.40-15,679.71

Finding the Fourth Proportional to 27,617.94, 38,111.40 and 15,679.71

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Solution

The fourth proportional to 27,617.94, 38,111.40 and 15,679.71 is: 21,637.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,617.94 : 38,111.40 = 15,679.71 : x
  2. Step 2: Convert to fraction form
    27,617.94/38,111.40 = 15,679.71/x
  3. Step 3: Cross multiply
    27,617.94x = 38,111.40 × 15,679.71
  4. Step 4: Simplify right side
    27,617.94x = 597,575,699.69
  5. Step 5: Solve for x
    x = 597,575,699.69/27,617.94
  6. Step 6: Final answer
    x = 21,637.23

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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.