Home / 13,385.48-20,081.39-4,620.15

Finding the Fourth Proportional to 13,385.48, 20,081.39 and 4,620.15

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Solution

The fourth proportional to 13,385.48, 20,081.39 and 4,620.15 is: 6,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.48 : 20,081.39 = 4,620.15 : x
  2. Step 2: Convert to fraction form
    13,385.48/20,081.39 = 4,620.15/x
  3. Step 3: Cross multiply
    13,385.48x = 20,081.39 × 4,620.15
  4. Step 4: Simplify right side
    13,385.48x = 92,779,010.91
  5. Step 5: Solve for x
    x = 92,779,010.91/13,385.48
  6. Step 6: Final answer
    x = 6,931.32

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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.