Home / 21,605.49-29,814.32-12,045.06

Finding the Fourth Proportional to 21,605.49, 29,814.32 and 12,045.06

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Solution

The fourth proportional to 21,605.49, 29,814.32 and 12,045.06 is: 16,621.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.49 : 29,814.32 = 12,045.06 : x
  2. Step 2: Convert to fraction form
    21,605.49/29,814.32 = 12,045.06/x
  3. Step 3: Cross multiply
    21,605.49x = 29,814.32 × 12,045.06
  4. Step 4: Simplify right side
    21,605.49x = 359,115,213.03
  5. Step 5: Solve for x
    x = 359,115,213.03/21,605.49
  6. Step 6: Final answer
    x = 16,621.48

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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.