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Finding the Fourth Proportional to 19,703.69, 27,181.70 and 13,332.52

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Solution

The fourth proportional to 19,703.69, 27,181.70 and 13,332.52 is: 18,392.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,703.69 : 27,181.70 = 13,332.52 : x
  2. Step 2: Convert to fraction form
    19,703.69/27,181.70 = 13,332.52/x
  3. Step 3: Cross multiply
    19,703.69x = 27,181.70 × 13,332.52
  4. Step 4: Simplify right side
    19,703.69x = 362,400,356.31
  5. Step 5: Solve for x
    x = 362,400,356.31/19,703.69
  6. Step 6: Final answer
    x = 18,392.51

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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.