Home / 20,933.73-31,386.30-6,888.60

Finding the Fourth Proportional to 20,933.73, 31,386.30 and 6,888.60

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Solution

The fourth proportional to 20,933.73, 31,386.30 and 6,888.60 is: 10,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.73 : 31,386.30 = 6,888.60 : x
  2. Step 2: Convert to fraction form
    20,933.73/31,386.30 = 6,888.60/x
  3. Step 3: Cross multiply
    20,933.73x = 31,386.30 × 6,888.60
  4. Step 4: Simplify right side
    20,933.73x = 216,207,666.18
  5. Step 5: Solve for x
    x = 216,207,666.18/20,933.73
  6. Step 6: Final answer
    x = 10,328.20

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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.