Home / 19,438.56-26,829-11,480.40

Finding the Fourth Proportional to 19,438.56, 26,829 and 11,480.40

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Solution

The fourth proportional to 19,438.56, 26,829 and 11,480.40 is: 15,845.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.56 : 26,829 = 11,480.40 : x
  2. Step 2: Convert to fraction form
    19,438.56/26,829 = 11,480.40/x
  3. Step 3: Cross multiply
    19,438.56x = 26,829 × 11,480.40
  4. Step 4: Simplify right side
    19,438.56x = 308,007,651.60
  5. Step 5: Solve for x
    x = 308,007,651.60/19,438.56
  6. Step 6: Final answer
    x = 15,845.19

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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.