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Finding the Fourth Proportional to 14,407.65, 21,612.15 and 7,003.28

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Solution

The fourth proportional to 14,407.65, 21,612.15 and 7,003.28 is: 10,505.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,407.65 : 21,612.15 = 7,003.28 : x
  2. Step 2: Convert to fraction form
    14,407.65/21,612.15 = 7,003.28/x
  3. Step 3: Cross multiply
    14,407.65x = 21,612.15 × 7,003.28
  4. Step 4: Simplify right side
    14,407.65x = 151,355,937.85
  5. Step 5: Solve for x
    x = 151,355,937.85/14,407.65
  6. Step 6: Final answer
    x = 10,505.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.