Home / 19,985.46-27,583.71-12,435.18

Finding the Fourth Proportional to 19,985.46, 27,583.71 and 12,435.18

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Solution

The fourth proportional to 19,985.46, 27,583.71 and 12,435.18 is: 17,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.46 : 27,583.71 = 12,435.18 : x
  2. Step 2: Convert to fraction form
    19,985.46/27,583.71 = 12,435.18/x
  3. Step 3: Cross multiply
    19,985.46x = 27,583.71 × 12,435.18
  4. Step 4: Simplify right side
    19,985.46x = 343,008,398.92
  5. Step 5: Solve for x
    x = 343,008,398.92/19,985.46
  6. Step 6: Final answer
    x = 17,162.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.