Home / 21,057.68-29,050.44-13,490.48

Finding the Fourth Proportional to 21,057.68, 29,050.44 and 13,490.48

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Solution

The fourth proportional to 21,057.68, 29,050.44 and 13,490.48 is: 18,611.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.68 : 29,050.44 = 13,490.48 : x
  2. Step 2: Convert to fraction form
    21,057.68/29,050.44 = 13,490.48/x
  3. Step 3: Cross multiply
    21,057.68x = 29,050.44 × 13,490.48
  4. Step 4: Simplify right side
    21,057.68x = 391,904,379.81
  5. Step 5: Solve for x
    x = 391,904,379.81/21,057.68
  6. Step 6: Final answer
    x = 18,611.00

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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.