Home / 51,813.45-77,716.80-13,862.21

Finding the Fourth Proportional to 51,813.45, 77,716.80 and 13,862.21

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Solution

The fourth proportional to 51,813.45, 77,716.80 and 13,862.21 is: 20,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,813.45 : 77,716.80 = 13,862.21 : x
  2. Step 2: Convert to fraction form
    51,813.45/77,716.80 = 13,862.21/x
  3. Step 3: Cross multiply
    51,813.45x = 77,716.80 × 13,862.21
  4. Step 4: Simplify right side
    51,813.45x = 1,077,326,213.54
  5. Step 5: Solve for x
    x = 1,077,326,213.54/51,813.45
  6. Step 6: Final answer
    x = 20,792.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.