Home / 19,905.18-27,469.59-10,953.15

Finding the Fourth Proportional to 19,905.18, 27,469.59 and 10,953.15

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Solution

The fourth proportional to 19,905.18, 27,469.59 and 10,953.15 is: 15,115.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.18 : 27,469.59 = 10,953.15 : x
  2. Step 2: Convert to fraction form
    19,905.18/27,469.59 = 10,953.15/x
  3. Step 3: Cross multiply
    19,905.18x = 27,469.59 × 10,953.15
  4. Step 4: Simplify right side
    19,905.18x = 300,878,539.71
  5. Step 5: Solve for x
    x = 300,878,539.71/19,905.18
  6. Step 6: Final answer
    x = 15,115.59

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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.