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Finding the Fourth Proportional to 14,645.70, 20,210.17 and 8,980.46

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Solution

The fourth proportional to 14,645.70, 20,210.17 and 8,980.46 is: 12,392.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.70 : 20,210.17 = 8,980.46 : x
  2. Step 2: Convert to fraction form
    14,645.70/20,210.17 = 8,980.46/x
  3. Step 3: Cross multiply
    14,645.70x = 20,210.17 × 8,980.46
  4. Step 4: Simplify right side
    14,645.70x = 181,496,623.28
  5. Step 5: Solve for x
    x = 181,496,623.28/14,645.70
  6. Step 6: Final answer
    x = 12,392.49

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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.