Home / 20,730.60-31,095.88-5,148.23

Finding the Fourth Proportional to 20,730.60, 31,095.88 and 5,148.23

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Solution

The fourth proportional to 20,730.60, 31,095.88 and 5,148.23 is: 7,722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.60 : 31,095.88 = 5,148.23 : x
  2. Step 2: Convert to fraction form
    20,730.60/31,095.88 = 5,148.23/x
  3. Step 3: Cross multiply
    20,730.60x = 31,095.88 × 5,148.23
  4. Step 4: Simplify right side
    20,730.60x = 160,088,573.94
  5. Step 5: Solve for x
    x = 160,088,573.94/20,730.60
  6. Step 6: Final answer
    x = 7,722.33

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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.