Home / 19,420.16-29,105.79-8,313.71

Finding the Fourth Proportional to 19,420.16, 29,105.79 and 8,313.71

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Solution

The fourth proportional to 19,420.16, 29,105.79 and 8,313.71 is: 12,460.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.16 : 29,105.79 = 8,313.71 : x
  2. Step 2: Convert to fraction form
    19,420.16/29,105.79 = 8,313.71/x
  3. Step 3: Cross multiply
    19,420.16x = 29,105.79 × 8,313.71
  4. Step 4: Simplify right side
    19,420.16x = 241,977,097.38
  5. Step 5: Solve for x
    x = 241,977,097.38/19,420.16
  6. Step 6: Final answer
    x = 12,460.10

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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.