Home / 20,730.60-31,095.90-13,732.20

Finding the Fourth Proportional to 20,730.60, 31,095.90 and 13,732.20

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Solution

The fourth proportional to 20,730.60, 31,095.90 and 13,732.20 is: 20,598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.60 : 31,095.90 = 13,732.20 : x
  2. Step 2: Convert to fraction form
    20,730.60/31,095.90 = 13,732.20/x
  3. Step 3: Cross multiply
    20,730.60x = 31,095.90 × 13,732.20
  4. Step 4: Simplify right side
    20,730.60x = 427,015,117.98
  5. Step 5: Solve for x
    x = 427,015,117.98/20,730.60
  6. Step 6: Final answer
    x = 20,598.30

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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.