Home / 12,621.24-18,931.95-3,856.32

Finding the Fourth Proportional to 12,621.24, 18,931.95 and 3,856.32

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Solution

The fourth proportional to 12,621.24, 18,931.95 and 3,856.32 is: 5,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.24 : 18,931.95 = 3,856.32 : x
  2. Step 2: Convert to fraction form
    12,621.24/18,931.95 = 3,856.32/x
  3. Step 3: Cross multiply
    12,621.24x = 18,931.95 × 3,856.32
  4. Step 4: Simplify right side
    12,621.24x = 73,007,657.42
  5. Step 5: Solve for x
    x = 73,007,657.42/12,621.24
  6. Step 6: Final answer
    x = 5,784.51

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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.