Home / 27,717.13-38,248.79-15,782.17

Finding the Fourth Proportional to 27,717.13, 38,248.79 and 15,782.17

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Solution

The fourth proportional to 27,717.13, 38,248.79 and 15,782.17 is: 21,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,717.13 : 38,248.79 = 15,782.17 : x
  2. Step 2: Convert to fraction form
    27,717.13/38,248.79 = 15,782.17/x
  3. Step 3: Cross multiply
    27,717.13x = 38,248.79 × 15,782.17
  4. Step 4: Simplify right side
    27,717.13x = 603,648,827.16
  5. Step 5: Solve for x
    x = 603,648,827.16/27,717.13
  6. Step 6: Final answer
    x = 21,778.91

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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.