Home / 13,684.87-18,885.12-7,397.25

Finding the Fourth Proportional to 13,684.87, 18,885.12 and 7,397.25

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Solution

The fourth proportional to 13,684.87, 18,885.12 and 7,397.25 is: 10,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.87 : 18,885.12 = 7,397.25 : x
  2. Step 2: Convert to fraction form
    13,684.87/18,885.12 = 7,397.25/x
  3. Step 3: Cross multiply
    13,684.87x = 18,885.12 × 7,397.25
  4. Step 4: Simplify right side
    13,684.87x = 139,697,953.92
  5. Step 5: Solve for x
    x = 139,697,953.92/13,684.87
  6. Step 6: Final answer
    x = 10,208.20

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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.