Home / 28,036.09-42,053.22-11,391.20

Finding the Fourth Proportional to 28,036.09, 42,053.22 and 11,391.20

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Solution

The fourth proportional to 28,036.09, 42,053.22 and 11,391.20 is: 17,086.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.09 : 42,053.22 = 11,391.20 : x
  2. Step 2: Convert to fraction form
    28,036.09/42,053.22 = 11,391.20/x
  3. Step 3: Cross multiply
    28,036.09x = 42,053.22 × 11,391.20
  4. Step 4: Simplify right side
    28,036.09x = 479,036,639.66
  5. Step 5: Solve for x
    x = 479,036,639.66/28,036.09
  6. Step 6: Final answer
    x = 17,086.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.