Home / 15,219.01-21,000.67-10,443.05

Finding the Fourth Proportional to 15,219.01, 21,000.67 and 10,443.05

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Solution

The fourth proportional to 15,219.01, 21,000.67 and 10,443.05 is: 14,410.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.01 : 21,000.67 = 10,443.05 : x
  2. Step 2: Convert to fraction form
    15,219.01/21,000.67 = 10,443.05/x
  3. Step 3: Cross multiply
    15,219.01x = 21,000.67 × 10,443.05
  4. Step 4: Simplify right side
    15,219.01x = 219,311,046.84
  5. Step 5: Solve for x
    x = 219,311,046.84/15,219.01
  6. Step 6: Final answer
    x = 14,410.34

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.