Home / 21,318.08-29,419.12-12,370.92

Finding the Fourth Proportional to 21,318.08, 29,419.12 and 12,370.92

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Solution

The fourth proportional to 21,318.08, 29,419.12 and 12,370.92 is: 17,071.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.08 : 29,419.12 = 12,370.92 : x
  2. Step 2: Convert to fraction form
    21,318.08/29,419.12 = 12,370.92/x
  3. Step 3: Cross multiply
    21,318.08x = 29,419.12 × 12,370.92
  4. Step 4: Simplify right side
    21,318.08x = 363,941,579.99
  5. Step 5: Solve for x
    x = 363,941,579.99/21,318.08
  6. Step 6: Final answer
    x = 17,071.97

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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.