Home / 19,720.77-27,217.65-12,068.43

Finding the Fourth Proportional to 19,720.77, 27,217.65 and 12,068.43

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Solution

The fourth proportional to 19,720.77, 27,217.65 and 12,068.43 is: 16,656.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.77 : 27,217.65 = 12,068.43 : x
  2. Step 2: Convert to fraction form
    19,720.77/27,217.65 = 12,068.43/x
  3. Step 3: Cross multiply
    19,720.77x = 27,217.65 × 12,068.43
  4. Step 4: Simplify right side
    19,720.77x = 328,474,303.79
  5. Step 5: Solve for x
    x = 328,474,303.79/19,720.77
  6. Step 6: Final answer
    x = 16,656.26

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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.