Home / 21,019.91-29,002.46-11,943.32

Finding the Fourth Proportional to 21,019.91, 29,002.46 and 11,943.32

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Solution

The fourth proportional to 21,019.91, 29,002.46 and 11,943.32 is: 16,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.91 : 29,002.46 = 11,943.32 : x
  2. Step 2: Convert to fraction form
    21,019.91/29,002.46 = 11,943.32/x
  3. Step 3: Cross multiply
    21,019.91x = 29,002.46 × 11,943.32
  4. Step 4: Simplify right side
    21,019.91x = 346,385,455.84
  5. Step 5: Solve for x
    x = 346,385,455.84/21,019.91
  6. Step 6: Final answer
    x = 16,478.93

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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.