Home / 18,890.32-28,335.96-5,039.76

Finding the Fourth Proportional to 18,890.32, 28,335.96 and 5,039.76

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Solution

The fourth proportional to 18,890.32, 28,335.96 and 5,039.76 is: 7,559.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.32 : 28,335.96 = 5,039.76 : x
  2. Step 2: Convert to fraction form
    18,890.32/28,335.96 = 5,039.76/x
  3. Step 3: Cross multiply
    18,890.32x = 28,335.96 × 5,039.76
  4. Step 4: Simplify right side
    18,890.32x = 142,806,437.77
  5. Step 5: Solve for x
    x = 142,806,437.77/18,890.32
  6. Step 6: Final answer
    x = 7,559.77

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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.