Home / 14,646.38-20,211.91-7,931.86

Finding the Fourth Proportional to 14,646.38, 20,211.91 and 7,931.86

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Solution

The fourth proportional to 14,646.38, 20,211.91 and 7,931.86 is: 10,945.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,646.38 : 20,211.91 = 7,931.86 : x
  2. Step 2: Convert to fraction form
    14,646.38/20,211.91 = 7,931.86/x
  3. Step 3: Cross multiply
    14,646.38x = 20,211.91 × 7,931.86
  4. Step 4: Simplify right side
    14,646.38x = 160,317,970.09
  5. Step 5: Solve for x
    x = 160,317,970.09/14,646.38
  6. Step 6: Final answer
    x = 10,945.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.