Home / 18,621.36-27,931.32-6,309.36

Finding the Fourth Proportional to 18,621.36, 27,931.32 and 6,309.36

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Solution

The fourth proportional to 18,621.36, 27,931.32 and 6,309.36 is: 9,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.36 : 27,931.32 = 6,309.36 : x
  2. Step 2: Convert to fraction form
    18,621.36/27,931.32 = 6,309.36/x
  3. Step 3: Cross multiply
    18,621.36x = 27,931.32 × 6,309.36
  4. Step 4: Simplify right side
    18,621.36x = 176,228,753.16
  5. Step 5: Solve for x
    x = 176,228,753.16/18,621.36
  6. Step 6: Final answer
    x = 9,463.80

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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.