Home / 30,500.56-45,746.16-8,315.72

Finding the Fourth Proportional to 30,500.56, 45,746.16 and 8,315.72

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Solution

The fourth proportional to 30,500.56, 45,746.16 and 8,315.72 is: 12,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,500.56 : 45,746.16 = 8,315.72 : x
  2. Step 2: Convert to fraction form
    30,500.56/45,746.16 = 8,315.72/x
  3. Step 3: Cross multiply
    30,500.56x = 45,746.16 × 8,315.72
  4. Step 4: Simplify right side
    30,500.56x = 380,412,257.64
  5. Step 5: Solve for x
    x = 380,412,257.64/30,500.56
  6. Step 6: Final answer
    x = 12,472.30

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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.