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Finding the Fourth Proportional to 14,957.08, 20,649.14 and 8,990.28

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Solution

The fourth proportional to 14,957.08, 20,649.14 and 8,990.28 is: 12,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,957.08 : 20,649.14 = 8,990.28 : x
  2. Step 2: Convert to fraction form
    14,957.08/20,649.14 = 8,990.28/x
  3. Step 3: Cross multiply
    14,957.08x = 20,649.14 × 8,990.28
  4. Step 4: Simplify right side
    14,957.08x = 185,641,550.36
  5. Step 5: Solve for x
    x = 185,641,550.36/14,957.08
  6. Step 6: Final answer
    x = 12,411.62

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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.