Home / 18,709.31-28,068.59-5,561.63

Finding the Fourth Proportional to 18,709.31, 28,068.59 and 5,561.63

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Solution

The fourth proportional to 18,709.31, 28,068.59 and 5,561.63 is: 8,343.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.31 : 28,068.59 = 5,561.63 : x
  2. Step 2: Convert to fraction form
    18,709.31/28,068.59 = 5,561.63/x
  3. Step 3: Cross multiply
    18,709.31x = 28,068.59 × 5,561.63
  4. Step 4: Simplify right side
    18,709.31x = 156,107,112.20
  5. Step 5: Solve for x
    x = 156,107,112.20/18,709.31
  6. Step 6: Final answer
    x = 8,343.82

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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.