Home / 15,426.30-21,288.30-8,352.72

Finding the Fourth Proportional to 15,426.30, 21,288.30 and 8,352.72

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Solution

The fourth proportional to 15,426.30, 21,288.30 and 8,352.72 is: 11,526.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.30 : 21,288.30 = 8,352.72 : x
  2. Step 2: Convert to fraction form
    15,426.30/21,288.30 = 8,352.72/x
  3. Step 3: Cross multiply
    15,426.30x = 21,288.30 × 8,352.72
  4. Step 4: Simplify right side
    15,426.30x = 177,815,209.18
  5. Step 5: Solve for x
    x = 177,815,209.18/15,426.30
  6. Step 6: Final answer
    x = 11,526.76

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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.