Home / 20,730.03-31,101.61-7,402.71

Finding the Fourth Proportional to 20,730.03, 31,101.61 and 7,402.71

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Solution

The fourth proportional to 20,730.03, 31,101.61 and 7,402.71 is: 11,106.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.03 : 31,101.61 = 7,402.71 : x
  2. Step 2: Convert to fraction form
    20,730.03/31,101.61 = 7,402.71/x
  3. Step 3: Cross multiply
    20,730.03x = 31,101.61 × 7,402.71
  4. Step 4: Simplify right side
    20,730.03x = 230,236,199.36
  5. Step 5: Solve for x
    x = 230,236,199.36/20,730.03
  6. Step 6: Final answer
    x = 11,106.41

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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.