Home / 19,434.64-26,812.20-11,969.68

Finding the Fourth Proportional to 19,434.64, 26,812.20 and 11,969.68

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Solution

The fourth proportional to 19,434.64, 26,812.20 and 11,969.68 is: 16,513.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,434.64 : 26,812.20 = 11,969.68 : x
  2. Step 2: Convert to fraction form
    19,434.64/26,812.20 = 11,969.68/x
  3. Step 3: Cross multiply
    19,434.64x = 26,812.20 × 11,969.68
  4. Step 4: Simplify right side
    19,434.64x = 320,933,454.10
  5. Step 5: Solve for x
    x = 320,933,454.10/19,434.64
  6. Step 6: Final answer
    x = 16,513.48

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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.