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Finding the Fourth Proportional to 27,992.70, 38,629.59 and 15,417.18

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Solution

The fourth proportional to 27,992.70, 38,629.59 and 15,417.18 is: 21,275.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,992.70 : 38,629.59 = 15,417.18 : x
  2. Step 2: Convert to fraction form
    27,992.70/38,629.59 = 15,417.18/x
  3. Step 3: Cross multiply
    27,992.70x = 38,629.59 × 15,417.18
  4. Step 4: Simplify right side
    27,992.70x = 595,559,342.36
  5. Step 5: Solve for x
    x = 595,559,342.36/27,992.70
  6. Step 6: Final answer
    x = 21,275.52

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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.