Home / 20,955.12-31,432.95-6,164.36

Finding the Fourth Proportional to 20,955.12, 31,432.95 and 6,164.36

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Solution

The fourth proportional to 20,955.12, 31,432.95 and 6,164.36 is: 9,246.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.12 : 31,432.95 = 6,164.36 : x
  2. Step 2: Convert to fraction form
    20,955.12/31,432.95 = 6,164.36/x
  3. Step 3: Cross multiply
    20,955.12x = 31,432.95 × 6,164.36
  4. Step 4: Simplify right side
    20,955.12x = 193,763,862.50
  5. Step 5: Solve for x
    x = 193,763,862.50/20,955.12
  6. Step 6: Final answer
    x = 9,246.61

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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.