Home / 12,775.59-19,164.30-4,457.70

Finding the Fourth Proportional to 12,775.59, 19,164.30 and 4,457.70

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Solution

The fourth proportional to 12,775.59, 19,164.30 and 4,457.70 is: 6,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.59 : 19,164.30 = 4,457.70 : x
  2. Step 2: Convert to fraction form
    12,775.59/19,164.30 = 4,457.70/x
  3. Step 3: Cross multiply
    12,775.59x = 19,164.30 × 4,457.70
  4. Step 4: Simplify right side
    12,775.59x = 85,428,683.39
  5. Step 5: Solve for x
    x = 85,428,683.39/12,775.59
  6. Step 6: Final answer
    x = 6,686.87

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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.