Home / 13,478.58-18,600.20-7,510.12

Finding the Fourth Proportional to 13,478.58, 18,600.20 and 7,510.12

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Solution

The fourth proportional to 13,478.58, 18,600.20 and 7,510.12 is: 10,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.58 : 18,600.20 = 7,510.12 : x
  2. Step 2: Convert to fraction form
    13,478.58/18,600.20 = 7,510.12/x
  3. Step 3: Cross multiply
    13,478.58x = 18,600.20 × 7,510.12
  4. Step 4: Simplify right side
    13,478.58x = 139,689,742.97
  5. Step 5: Solve for x
    x = 139,689,742.97/13,478.58
  6. Step 6: Final answer
    x = 10,363.83

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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.