Home / 21,473.40-29,639.52-12,974.22

Finding the Fourth Proportional to 21,473.40, 29,639.52 and 12,974.22

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Solution

The fourth proportional to 21,473.40, 29,639.52 and 12,974.22 is: 17,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,473.40 : 29,639.52 = 12,974.22 : x
  2. Step 2: Convert to fraction form
    21,473.40/29,639.52 = 12,974.22/x
  3. Step 3: Cross multiply
    21,473.40x = 29,639.52 × 12,974.22
  4. Step 4: Simplify right side
    21,473.40x = 384,549,653.17
  5. Step 5: Solve for x
    x = 384,549,653.17/21,473.40
  6. Step 6: Final answer
    x = 17,908.19

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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.