Home / 13,319.61-19,977.52-5,425.57

Finding the Fourth Proportional to 13,319.61, 19,977.52 and 5,425.57

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Solution

The fourth proportional to 13,319.61, 19,977.52 and 5,425.57 is: 8,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.61 : 19,977.52 = 5,425.57 : x
  2. Step 2: Convert to fraction form
    13,319.61/19,977.52 = 5,425.57/x
  3. Step 3: Cross multiply
    13,319.61x = 19,977.52 × 5,425.57
  4. Step 4: Simplify right side
    13,319.61x = 108,389,433.19
  5. Step 5: Solve for x
    x = 108,389,433.19/13,319.61
  6. Step 6: Final answer
    x = 8,137.58

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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.