Home / 12,715.43-19,073.16-5,315.84

Finding the Fourth Proportional to 12,715.43, 19,073.16 and 5,315.84

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Solution

The fourth proportional to 12,715.43, 19,073.16 and 5,315.84 is: 7,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.43 : 19,073.16 = 5,315.84 : x
  2. Step 2: Convert to fraction form
    12,715.43/19,073.16 = 5,315.84/x
  3. Step 3: Cross multiply
    12,715.43x = 19,073.16 × 5,315.84
  4. Step 4: Simplify right side
    12,715.43x = 101,389,866.85
  5. Step 5: Solve for x
    x = 101,389,866.85/12,715.43
  6. Step 6: Final answer
    x = 7,973.77

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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.