Home / 20,685.25-31,032.51-6,646.07

Finding the Fourth Proportional to 20,685.25, 31,032.51 and 6,646.07

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Solution

The fourth proportional to 20,685.25, 31,032.51 and 6,646.07 is: 9,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.25 : 31,032.51 = 6,646.07 : x
  2. Step 2: Convert to fraction form
    20,685.25/31,032.51 = 6,646.07/x
  3. Step 3: Cross multiply
    20,685.25x = 31,032.51 × 6,646.07
  4. Step 4: Simplify right side
    20,685.25x = 206,244,311.32
  5. Step 5: Solve for x
    x = 206,244,311.32/20,685.25
  6. Step 6: Final answer
    x = 9,970.60

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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.