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Finding the Fourth Proportional to 14,007.30, 21,010.95 and 7,008.90

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Solution

The fourth proportional to 14,007.30, 21,010.95 and 7,008.90 is: 10,513.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.30 : 21,010.95 = 7,008.90 : x
  2. Step 2: Convert to fraction form
    14,007.30/21,010.95 = 7,008.90/x
  3. Step 3: Cross multiply
    14,007.30x = 21,010.95 × 7,008.90
  4. Step 4: Simplify right side
    14,007.30x = 147,263,647.46
  5. Step 5: Solve for x
    x = 147,263,647.46/14,007.30
  6. Step 6: Final answer
    x = 10,513.35

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Double scale
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Similar ratio
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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.