Home / 27,831.96-38,407.77-15,085.08

Finding the Fourth Proportional to 27,831.96, 38,407.77 and 15,085.08

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Solution

The fourth proportional to 27,831.96, 38,407.77 and 15,085.08 is: 20,817.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.96 : 38,407.77 = 15,085.08 : x
  2. Step 2: Convert to fraction form
    27,831.96/38,407.77 = 15,085.08/x
  3. Step 3: Cross multiply
    27,831.96x = 38,407.77 × 15,085.08
  4. Step 4: Simplify right side
    27,831.96x = 579,384,283.07
  5. Step 5: Solve for x
    x = 579,384,283.07/27,831.96
  6. Step 6: Final answer
    x = 20,817.23

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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.