Home / 20,955.81-31,433.67-6,164.71

Finding the Fourth Proportional to 20,955.81, 31,433.67 and 6,164.71

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Solution

The fourth proportional to 20,955.81, 31,433.67 and 6,164.71 is: 9,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.81 : 31,433.67 = 6,164.71 : x
  2. Step 2: Convert to fraction form
    20,955.81/31,433.67 = 6,164.71/x
  3. Step 3: Cross multiply
    20,955.81x = 31,433.67 × 6,164.71
  4. Step 4: Simplify right side
    20,955.81x = 193,779,381.20
  5. Step 5: Solve for x
    x = 193,779,381.20/20,955.81
  6. Step 6: Final answer
    x = 9,247.05

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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.