Home / 14,187.42-19,578.28-7,813.96

Finding the Fourth Proportional to 14,187.42, 19,578.28 and 7,813.96

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Solution

The fourth proportional to 14,187.42, 19,578.28 and 7,813.96 is: 10,783.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.42 : 19,578.28 = 7,813.96 : x
  2. Step 2: Convert to fraction form
    14,187.42/19,578.28 = 7,813.96/x
  3. Step 3: Cross multiply
    14,187.42x = 19,578.28 × 7,813.96
  4. Step 4: Simplify right side
    14,187.42x = 152,983,896.79
  5. Step 5: Solve for x
    x = 152,983,896.79/14,187.42
  6. Step 6: Final answer
    x = 10,783.07

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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.