Home / 21,473.07-29,631.32-12,398.77

Finding the Fourth Proportional to 21,473.07, 29,631.32 and 12,398.77

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Solution

The fourth proportional to 21,473.07, 29,631.32 and 12,398.77 is: 17,109.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,473.07 : 29,631.32 = 12,398.77 : x
  2. Step 2: Convert to fraction form
    21,473.07/29,631.32 = 12,398.77/x
  3. Step 3: Cross multiply
    21,473.07x = 29,631.32 × 12,398.77
  4. Step 4: Simplify right side
    21,473.07x = 367,391,943.02
  5. Step 5: Solve for x
    x = 367,391,943.02/21,473.07
  6. Step 6: Final answer
    x = 17,109.43

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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.