Home / 13,920.64-19,207.58-8,881.65

Finding the Fourth Proportional to 13,920.64, 19,207.58 and 8,881.65

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Solution

The fourth proportional to 13,920.64, 19,207.58 and 8,881.65 is: 12,254.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.64 : 19,207.58 = 8,881.65 : x
  2. Step 2: Convert to fraction form
    13,920.64/19,207.58 = 8,881.65/x
  3. Step 3: Cross multiply
    13,920.64x = 19,207.58 × 8,881.65
  4. Step 4: Simplify right side
    13,920.64x = 170,594,958.50
  5. Step 5: Solve for x
    x = 170,594,958.50/13,920.64
  6. Step 6: Final answer
    x = 12,254.82

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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.