Home / 18,688.28-25,792.60-12,313.88

Finding the Fourth Proportional to 18,688.28, 25,792.60 and 12,313.88

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Solution

The fourth proportional to 18,688.28, 25,792.60 and 12,313.88 is: 16,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.28 : 25,792.60 = 12,313.88 : x
  2. Step 2: Convert to fraction form
    18,688.28/25,792.60 = 12,313.88/x
  3. Step 3: Cross multiply
    18,688.28x = 25,792.60 × 12,313.88
  4. Step 4: Simplify right side
    18,688.28x = 317,606,981.29
  5. Step 5: Solve for x
    x = 317,606,981.29/18,688.28
  6. Step 6: Final answer
    x = 16,994.98

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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.