Home / 13,730.17-20,595.36-8,990.32

Finding the Fourth Proportional to 13,730.17, 20,595.36 and 8,990.32

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Solution

The fourth proportional to 13,730.17, 20,595.36 and 8,990.32 is: 13,485.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.17 : 20,595.36 = 8,990.32 : x
  2. Step 2: Convert to fraction form
    13,730.17/20,595.36 = 8,990.32/x
  3. Step 3: Cross multiply
    13,730.17x = 20,595.36 × 8,990.32
  4. Step 4: Simplify right side
    13,730.17x = 185,158,876.92
  5. Step 5: Solve for x
    x = 185,158,876.92/13,730.17
  6. Step 6: Final answer
    x = 13,485.55

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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.