Home / 15,045.40-20,763.36-8,672.92

Finding the Fourth Proportional to 15,045.40, 20,763.36 and 8,672.92

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Solution

The fourth proportional to 15,045.40, 20,763.36 and 8,672.92 is: 11,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.40 : 20,763.36 = 8,672.92 : x
  2. Step 2: Convert to fraction form
    15,045.40/20,763.36 = 8,672.92/x
  3. Step 3: Cross multiply
    15,045.40x = 20,763.36 × 8,672.92
  4. Step 4: Simplify right side
    15,045.40x = 180,078,960.21
  5. Step 5: Solve for x
    x = 180,078,960.21/15,045.40
  6. Step 6: Final answer
    x = 11,969.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.