Home / 13,913.53-20,870.07-4,425.71

Finding the Fourth Proportional to 13,913.53, 20,870.07 and 4,425.71

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Solution

The fourth proportional to 13,913.53, 20,870.07 and 4,425.71 is: 6,638.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.53 : 20,870.07 = 4,425.71 : x
  2. Step 2: Convert to fraction form
    13,913.53/20,870.07 = 4,425.71/x
  3. Step 3: Cross multiply
    13,913.53x = 20,870.07 × 4,425.71
  4. Step 4: Simplify right side
    13,913.53x = 92,364,837.58
  5. Step 5: Solve for x
    x = 92,364,837.58/13,913.53
  6. Step 6: Final answer
    x = 6,638.49

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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.