Home / 13,312.38-19,971.95-4,992.42

Finding the Fourth Proportional to 13,312.38, 19,971.95 and 4,992.42

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Solution

The fourth proportional to 13,312.38, 19,971.95 and 4,992.42 is: 7,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.38 : 19,971.95 = 4,992.42 : x
  2. Step 2: Convert to fraction form
    13,312.38/19,971.95 = 4,992.42/x
  3. Step 3: Cross multiply
    13,312.38x = 19,971.95 × 4,992.42
  4. Step 4: Simplify right side
    13,312.38x = 99,708,362.62
  5. Step 5: Solve for x
    x = 99,708,362.62/13,312.38
  6. Step 6: Final answer
    x = 7,489.90

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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.