Home / 19,905.65-27,458.36-12,440.69

Finding the Fourth Proportional to 19,905.65, 27,458.36 and 12,440.69

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Solution

The fourth proportional to 19,905.65, 27,458.36 and 12,440.69 is: 17,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.65 : 27,458.36 = 12,440.69 : x
  2. Step 2: Convert to fraction form
    19,905.65/27,458.36 = 12,440.69/x
  3. Step 3: Cross multiply
    19,905.65x = 27,458.36 × 12,440.69
  4. Step 4: Simplify right side
    19,905.65x = 341,600,894.79
  5. Step 5: Solve for x
    x = 341,600,894.79/19,905.65
  6. Step 6: Final answer
    x = 17,161.00

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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.