Home / 34,779.60-47,995.20-20,632.68

Finding the Fourth Proportional to 34,779.60, 47,995.20 and 20,632.68

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Solution

The fourth proportional to 34,779.60, 47,995.20 and 20,632.68 is: 28,472.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,779.60 : 47,995.20 = 20,632.68 : x
  2. Step 2: Convert to fraction form
    34,779.60/47,995.20 = 20,632.68/x
  3. Step 3: Cross multiply
    34,779.60x = 47,995.20 × 20,632.68
  4. Step 4: Simplify right side
    34,779.60x = 990,269,603.14
  5. Step 5: Solve for x
    x = 990,269,603.14/34,779.60
  6. Step 6: Final answer
    x = 28,472.71

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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.