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Finding the Fourth Proportional to 14,001.80, 21,002.70 and 7,003.40

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Solution

The fourth proportional to 14,001.80, 21,002.70 and 7,003.40 is: 10,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.80 : 21,002.70 = 7,003.40 : x
  2. Step 2: Convert to fraction form
    14,001.80/21,002.70 = 7,003.40/x
  3. Step 3: Cross multiply
    14,001.80x = 21,002.70 × 7,003.40
  4. Step 4: Simplify right side
    14,001.80x = 147,090,309.18
  5. Step 5: Solve for x
    x = 147,090,309.18/14,001.80
  6. Step 6: Final answer
    x = 10,505.10

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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.