Home / 51,310.84-76,970.68-13,870.76

Finding the Fourth Proportional to 51,310.84, 76,970.68 and 13,870.76

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Solution

The fourth proportional to 51,310.84, 76,970.68 and 13,870.76 is: 20,807.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,310.84 : 76,970.68 = 13,870.76 : x
  2. Step 2: Convert to fraction form
    51,310.84/76,970.68 = 13,870.76/x
  3. Step 3: Cross multiply
    51,310.84x = 76,970.68 × 13,870.76
  4. Step 4: Simplify right side
    51,310.84x = 1,067,641,829.32
  5. Step 5: Solve for x
    x = 1,067,641,829.32/51,310.84
  6. Step 6: Final answer
    x = 20,807.33

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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.