Home / 20,352.99-30,525.34-12,854.28

Finding the Fourth Proportional to 20,352.99, 30,525.34 and 12,854.28

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Solution

The fourth proportional to 20,352.99, 30,525.34 and 12,854.28 is: 19,278.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.99 : 30,525.34 = 12,854.28 : x
  2. Step 2: Convert to fraction form
    20,352.99/30,525.34 = 12,854.28/x
  3. Step 3: Cross multiply
    20,352.99x = 30,525.34 × 12,854.28
  4. Step 4: Simplify right side
    20,352.99x = 392,381,267.46
  5. Step 5: Solve for x
    x = 392,381,267.46/20,352.99
  6. Step 6: Final answer
    x = 19,278.80

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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.