Home / 28,182.80-38,891.76-15,607.28

Finding the Fourth Proportional to 28,182.80, 38,891.76 and 15,607.28

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Solution

The fourth proportional to 28,182.80, 38,891.76 and 15,607.28 is: 21,537.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.80 : 38,891.76 = 15,607.28 : x
  2. Step 2: Convert to fraction form
    28,182.80/38,891.76 = 15,607.28/x
  3. Step 3: Cross multiply
    28,182.80x = 38,891.76 × 15,607.28
  4. Step 4: Simplify right side
    28,182.80x = 606,994,588.01
  5. Step 5: Solve for x
    x = 606,994,588.01/28,182.80
  6. Step 6: Final answer
    x = 21,537.77

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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.