Home / 20,030.36-27,639.50-11,076.65

Finding the Fourth Proportional to 20,030.36, 27,639.50 and 11,076.65

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Solution

The fourth proportional to 20,030.36, 27,639.50 and 11,076.65 is: 15,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.36 : 27,639.50 = 11,076.65 : x
  2. Step 2: Convert to fraction form
    20,030.36/27,639.50 = 11,076.65/x
  3. Step 3: Cross multiply
    20,030.36x = 27,639.50 × 11,076.65
  4. Step 4: Simplify right side
    20,030.36x = 306,153,071.20
  5. Step 5: Solve for x
    x = 306,153,071.20/20,030.36
  6. Step 6: Final answer
    x = 15,284.45

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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.