Home / 15,829.30-23,715.15-12,891.70

Finding the Fourth Proportional to 15,829.30, 23,715.15 and 12,891.70

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Solution

The fourth proportional to 15,829.30, 23,715.15 and 12,891.70 is: 19,314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.30 : 23,715.15 = 12,891.70 : x
  2. Step 2: Convert to fraction form
    15,829.30/23,715.15 = 12,891.70/x
  3. Step 3: Cross multiply
    15,829.30x = 23,715.15 × 12,891.70
  4. Step 4: Simplify right side
    15,829.30x = 305,728,599.26
  5. Step 5: Solve for x
    x = 305,728,599.26/15,829.30
  6. Step 6: Final answer
    x = 19,314.09

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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.