Home / 14,802.46-20,427.39-8,428.72

Finding the Fourth Proportional to 14,802.46, 20,427.39 and 8,428.72

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Solution

The fourth proportional to 14,802.46, 20,427.39 and 8,428.72 is: 11,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,802.46 : 20,427.39 = 8,428.72 : x
  2. Step 2: Convert to fraction form
    14,802.46/20,427.39 = 8,428.72/x
  3. Step 3: Cross multiply
    14,802.46x = 20,427.39 × 8,428.72
  4. Step 4: Simplify right side
    14,802.46x = 172,176,708.50
  5. Step 5: Solve for x
    x = 172,176,708.50/14,802.46
  6. Step 6: Final answer
    x = 11,631.63

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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.