Home / 19,964.22-27,547.18-12,800.40

Finding the Fourth Proportional to 19,964.22, 27,547.18 and 12,800.40

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Solution

The fourth proportional to 19,964.22, 27,547.18 and 12,800.40 is: 17,662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964.22 : 27,547.18 = 12,800.40 : x
  2. Step 2: Convert to fraction form
    19,964.22/27,547.18 = 12,800.40/x
  3. Step 3: Cross multiply
    19,964.22x = 27,547.18 × 12,800.40
  4. Step 4: Simplify right side
    19,964.22x = 352,614,922.87
  5. Step 5: Solve for x
    x = 352,614,922.87/19,964.22
  6. Step 6: Final answer
    x = 17,662.34

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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.