Home / 13,445.06-20,171.70-6,875.86

Finding the Fourth Proportional to 13,445.06, 20,171.70 and 6,875.86

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Solution

The fourth proportional to 13,445.06, 20,171.70 and 6,875.86 is: 10,315.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.06 : 20,171.70 = 6,875.86 : x
  2. Step 2: Convert to fraction form
    13,445.06/20,171.70 = 6,875.86/x
  3. Step 3: Cross multiply
    13,445.06x = 20,171.70 × 6,875.86
  4. Step 4: Simplify right side
    13,445.06x = 138,697,785.16
  5. Step 5: Solve for x
    x = 138,697,785.16/13,445.06
  6. Step 6: Final answer
    x = 10,315.89

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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.