Home / 15,429.29-21,289.91-8,713.37

Finding the Fourth Proportional to 15,429.29, 21,289.91 and 8,713.37

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Solution

The fourth proportional to 15,429.29, 21,289.91 and 8,713.37 is: 12,023.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.29 : 21,289.91 = 8,713.37 : x
  2. Step 2: Convert to fraction form
    15,429.29/21,289.91 = 8,713.37/x
  3. Step 3: Cross multiply
    15,429.29x = 21,289.91 × 8,713.37
  4. Step 4: Simplify right side
    15,429.29x = 185,506,872.75
  5. Step 5: Solve for x
    x = 185,506,872.75/15,429.29
  6. Step 6: Final answer
    x = 12,023.04

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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.