Home / 21,305.07-29,401.10-12,357.87

Finding the Fourth Proportional to 21,305.07, 29,401.10 and 12,357.87

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Solution

The fourth proportional to 21,305.07, 29,401.10 and 12,357.87 is: 17,053.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.07 : 29,401.10 = 12,357.87 : x
  2. Step 2: Convert to fraction form
    21,305.07/29,401.10 = 12,357.87/x
  3. Step 3: Cross multiply
    21,305.07x = 29,401.10 × 12,357.87
  4. Step 4: Simplify right side
    21,305.07x = 363,334,909.87
  5. Step 5: Solve for x
    x = 363,334,909.87/21,305.07
  6. Step 6: Final answer
    x = 17,053.92

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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.