Home / 13,445.34-20,124.87-7,189.71

Finding the Fourth Proportional to 13,445.34, 20,124.87 and 7,189.71

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Solution

The fourth proportional to 13,445.34, 20,124.87 and 7,189.71 is: 10,761.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.34 : 20,124.87 = 7,189.71 : x
  2. Step 2: Convert to fraction form
    13,445.34/20,124.87 = 7,189.71/x
  3. Step 3: Cross multiply
    13,445.34x = 20,124.87 × 7,189.71
  4. Step 4: Simplify right side
    13,445.34x = 144,691,878.46
  5. Step 5: Solve for x
    x = 144,691,878.46/13,445.34
  6. Step 6: Final answer
    x = 10,761.49

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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.