Home / 20,256.81-27,955.81-11,306.06

Finding the Fourth Proportional to 20,256.81, 27,955.81 and 11,306.06

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Solution

The fourth proportional to 20,256.81, 27,955.81 and 11,306.06 is: 15,603.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,256.81 : 27,955.81 = 11,306.06 : x
  2. Step 2: Convert to fraction form
    20,256.81/27,955.81 = 11,306.06/x
  3. Step 3: Cross multiply
    20,256.81x = 27,955.81 × 11,306.06
  4. Step 4: Simplify right side
    20,256.81x = 316,070,065.21
  5. Step 5: Solve for x
    x = 316,070,065.21/20,256.81
  6. Step 6: Final answer
    x = 15,603.15

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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.