Home / 14,688.71-20,270.44-8,721.57

Finding the Fourth Proportional to 14,688.71, 20,270.44 and 8,721.57

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Solution

The fourth proportional to 14,688.71, 20,270.44 and 8,721.57 is: 12,035.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.71 : 20,270.44 = 8,721.57 : x
  2. Step 2: Convert to fraction form
    14,688.71/20,270.44 = 8,721.57/x
  3. Step 3: Cross multiply
    14,688.71x = 20,270.44 × 8,721.57
  4. Step 4: Simplify right side
    14,688.71x = 176,790,061.39
  5. Step 5: Solve for x
    x = 176,790,061.39/14,688.71
  6. Step 6: Final answer
    x = 12,035.78

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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.