Home / 21,595.13-29,808.73-12,645.51

Finding the Fourth Proportional to 21,595.13, 29,808.73 and 12,645.51

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Solution

The fourth proportional to 21,595.13, 29,808.73 and 12,645.51 is: 17,455.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.13 : 29,808.73 = 12,645.51 : x
  2. Step 2: Convert to fraction form
    21,595.13/29,808.73 = 12,645.51/x
  3. Step 3: Cross multiply
    21,595.13x = 29,808.73 × 12,645.51
  4. Step 4: Simplify right side
    21,595.13x = 376,946,593.30
  5. Step 5: Solve for x
    x = 376,946,593.30/21,595.13
  6. Step 6: Final answer
    x = 17,455.17

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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.