Home / 12,384.12-18,581.02-5,453.76

Finding the Fourth Proportional to 12,384.12, 18,581.02 and 5,453.76

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Solution

The fourth proportional to 12,384.12, 18,581.02 and 5,453.76 is: 8,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.12 : 18,581.02 = 5,453.76 : x
  2. Step 2: Convert to fraction form
    12,384.12/18,581.02 = 5,453.76/x
  3. Step 3: Cross multiply
    12,384.12x = 18,581.02 × 5,453.76
  4. Step 4: Simplify right side
    12,384.12x = 101,336,423.64
  5. Step 5: Solve for x
    x = 101,336,423.64/12,384.12
  6. Step 6: Final answer
    x = 8,182.77

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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.