Home / 30,155.10-45,246.33-12,628.86

Finding the Fourth Proportional to 30,155.10, 45,246.33 and 12,628.86

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Solution

The fourth proportional to 30,155.10, 45,246.33 and 12,628.86 is: 18,949.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.10 : 45,246.33 = 12,628.86 : x
  2. Step 2: Convert to fraction form
    30,155.10/45,246.33 = 12,628.86/x
  3. Step 3: Cross multiply
    30,155.10x = 45,246.33 × 12,628.86
  4. Step 4: Simplify right side
    30,155.10x = 571,409,567.08
  5. Step 5: Solve for x
    x = 571,409,567.08/30,155.10
  6. Step 6: Final answer
    x = 18,949.02

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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.