Home / 19,953.16-27,531.34-15,171.80

Finding the Fourth Proportional to 19,953.16, 27,531.34 and 15,171.80

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Solution

The fourth proportional to 19,953.16, 27,531.34 and 15,171.80 is: 20,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.16 : 27,531.34 = 15,171.80 : x
  2. Step 2: Convert to fraction form
    19,953.16/27,531.34 = 15,171.80/x
  3. Step 3: Cross multiply
    19,953.16x = 27,531.34 × 15,171.80
  4. Step 4: Simplify right side
    19,953.16x = 417,699,984.21
  5. Step 5: Solve for x
    x = 417,699,984.21/19,953.16
  6. Step 6: Final answer
    x = 20,934.03

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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.