Home / 19,313.24-28,915.20-12,275.82

Finding the Fourth Proportional to 19,313.24, 28,915.20 and 12,275.82

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Solution

The fourth proportional to 19,313.24, 28,915.20 and 12,275.82 is: 18,378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.24 : 28,915.20 = 12,275.82 : x
  2. Step 2: Convert to fraction form
    19,313.24/28,915.20 = 12,275.82/x
  3. Step 3: Cross multiply
    19,313.24x = 28,915.20 × 12,275.82
  4. Step 4: Simplify right side
    19,313.24x = 354,957,790.46
  5. Step 5: Solve for x
    x = 354,957,790.46/19,313.24
  6. Step 6: Final answer
    x = 18,378.99

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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.