Home / 13,730.57-20,595.96-8,990.72

Finding the Fourth Proportional to 13,730.57, 20,595.96 and 8,990.72

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Solution

The fourth proportional to 13,730.57, 20,595.96 and 8,990.72 is: 13,486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.57 : 20,595.96 = 8,990.72 : x
  2. Step 2: Convert to fraction form
    13,730.57/20,595.96 = 8,990.72/x
  3. Step 3: Cross multiply
    13,730.57x = 20,595.96 × 8,990.72
  4. Step 4: Simplify right side
    13,730.57x = 185,172,509.49
  5. Step 5: Solve for x
    x = 185,172,509.49/13,730.57
  6. Step 6: Final answer
    x = 13,486.15

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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.