Home / 27,776.79-38,322.45-15,831.50

Finding the Fourth Proportional to 27,776.79, 38,322.45 and 15,831.50

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Solution

The fourth proportional to 27,776.79, 38,322.45 and 15,831.50 is: 21,842.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,776.79 : 38,322.45 = 15,831.50 : x
  2. Step 2: Convert to fraction form
    27,776.79/38,322.45 = 15,831.50/x
  3. Step 3: Cross multiply
    27,776.79x = 38,322.45 × 15,831.50
  4. Step 4: Simplify right side
    27,776.79x = 606,701,675.56
  5. Step 5: Solve for x
    x = 606,701,675.56/27,776.79
  6. Step 6: Final answer
    x = 21,842.04

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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.