Home / 19,320.32-28,980.80-6,183.76

Finding the Fourth Proportional to 19,320.32, 28,980.80 and 6,183.76

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Solution

The fourth proportional to 19,320.32, 28,980.80 and 6,183.76 is: 9,275.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.32 : 28,980.80 = 6,183.76 : x
  2. Step 2: Convert to fraction form
    19,320.32/28,980.80 = 6,183.76/x
  3. Step 3: Cross multiply
    19,320.32x = 28,980.80 × 6,183.76
  4. Step 4: Simplify right side
    19,320.32x = 179,210,311.81
  5. Step 5: Solve for x
    x = 179,210,311.81/19,320.32
  6. Step 6: Final answer
    x = 9,275.74

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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.