Home / 28,780.87-43,156.59-13,185.13

Finding the Fourth Proportional to 28,780.87, 43,156.59 and 13,185.13

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Solution

The fourth proportional to 28,780.87, 43,156.59 and 13,185.13 is: 19,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.87 : 43,156.59 = 13,185.13 : x
  2. Step 2: Convert to fraction form
    28,780.87/43,156.59 = 13,185.13/x
  3. Step 3: Cross multiply
    28,780.87x = 43,156.59 × 13,185.13
  4. Step 4: Simplify right side
    28,780.87x = 569,025,249.51
  5. Step 5: Solve for x
    x = 569,025,249.51/28,780.87
  6. Step 6: Final answer
    x = 19,770.95

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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.