Home / 20,930.01-31,345.80-9,812.76

Finding the Fourth Proportional to 20,930.01, 31,345.80 and 9,812.76

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Solution

The fourth proportional to 20,930.01, 31,345.80 and 9,812.76 is: 14,696.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.01 : 31,345.80 = 9,812.76 : x
  2. Step 2: Convert to fraction form
    20,930.01/31,345.80 = 9,812.76/x
  3. Step 3: Cross multiply
    20,930.01x = 31,345.80 × 9,812.76
  4. Step 4: Simplify right side
    20,930.01x = 307,588,812.41
  5. Step 5: Solve for x
    x = 307,588,812.41/20,930.01
  6. Step 6: Final answer
    x = 14,696.07

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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.