Home / 21,045.28-29,041.50-12,086.48

Finding the Fourth Proportional to 21,045.28, 29,041.50 and 12,086.48

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Solution

The fourth proportional to 21,045.28, 29,041.50 and 12,086.48 is: 16,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.28 : 29,041.50 = 12,086.48 : x
  2. Step 2: Convert to fraction form
    21,045.28/29,041.50 = 12,086.48/x
  3. Step 3: Cross multiply
    21,045.28x = 29,041.50 × 12,086.48
  4. Step 4: Simplify right side
    21,045.28x = 351,009,508.92
  5. Step 5: Solve for x
    x = 351,009,508.92/21,045.28
  6. Step 6: Final answer
    x = 16,678.78

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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.