Home / 12,708.87-19,070.79-5,312.76

Finding the Fourth Proportional to 12,708.87, 19,070.79 and 5,312.76

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Solution

The fourth proportional to 12,708.87, 19,070.79 and 5,312.76 is: 7,972.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.87 : 19,070.79 = 5,312.76 : x
  2. Step 2: Convert to fraction form
    12,708.87/19,070.79 = 5,312.76/x
  3. Step 3: Cross multiply
    12,708.87x = 19,070.79 × 5,312.76
  4. Step 4: Simplify right side
    12,708.87x = 101,318,530.28
  5. Step 5: Solve for x
    x = 101,318,530.28/12,708.87
  6. Step 6: Final answer
    x = 7,972.27

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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.