Home / 27,780.51-38,338.02-15,205.26

Finding the Fourth Proportional to 27,780.51, 38,338.02 and 15,205.26

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Solution

The fourth proportional to 27,780.51, 38,338.02 and 15,205.26 is: 20,983.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.51 : 38,338.02 = 15,205.26 : x
  2. Step 2: Convert to fraction form
    27,780.51/38,338.02 = 15,205.26/x
  3. Step 3: Cross multiply
    27,780.51x = 38,338.02 × 15,205.26
  4. Step 4: Simplify right side
    27,780.51x = 582,939,561.99
  5. Step 5: Solve for x
    x = 582,939,561.99/27,780.51
  6. Step 6: Final answer
    x = 20,983.76

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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.