Home / 13,813.20-19,039.46-9,774.81

Finding the Fourth Proportional to 13,813.20, 19,039.46 and 9,774.81

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Solution

The fourth proportional to 13,813.20, 19,039.46 and 9,774.81 is: 13,473.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.20 : 19,039.46 = 9,774.81 : x
  2. Step 2: Convert to fraction form
    13,813.20/19,039.46 = 9,774.81/x
  3. Step 3: Cross multiply
    13,813.20x = 19,039.46 × 9,774.81
  4. Step 4: Simplify right side
    13,813.20x = 186,107,055.13
  5. Step 5: Solve for x
    x = 186,107,055.13/13,813.20
  6. Step 6: Final answer
    x = 13,473.13

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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.