Home / 14,064.79-21,097.20-7,139.83

Finding the Fourth Proportional to 14,064.79, 21,097.20 and 7,139.83

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Solution

The fourth proportional to 14,064.79, 21,097.20 and 7,139.83 is: 10,709.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,064.79 : 21,097.20 = 7,139.83 : x
  2. Step 2: Convert to fraction form
    14,064.79/21,097.20 = 7,139.83/x
  3. Step 3: Cross multiply
    14,064.79x = 21,097.20 × 7,139.83
  4. Step 4: Simplify right side
    14,064.79x = 150,630,421.48
  5. Step 5: Solve for x
    x = 150,630,421.48/14,064.79
  6. Step 6: Final answer
    x = 10,709.75

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