Home / 30,211.48-45,309.30-13,562.20

Finding the Fourth Proportional to 30,211.48, 45,309.30 and 13,562.20

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Solution

The fourth proportional to 30,211.48, 45,309.30 and 13,562.20 is: 20,339.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.48 : 45,309.30 = 13,562.20 : x
  2. Step 2: Convert to fraction form
    30,211.48/45,309.30 = 13,562.20/x
  3. Step 3: Cross multiply
    30,211.48x = 45,309.30 × 13,562.20
  4. Step 4: Simplify right side
    30,211.48x = 614,493,788.46
  5. Step 5: Solve for x
    x = 614,493,788.46/30,211.48
  6. Step 6: Final answer
    x = 20,339.74

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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.