Home / 19,664.32-27,164.28-13,693

Finding the Fourth Proportional to 19,664.32, 27,164.28 and 13,693

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Solution

The fourth proportional to 19,664.32, 27,164.28 and 13,693 is: 18,915.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.32 : 27,164.28 = 13,693 : x
  2. Step 2: Convert to fraction form
    19,664.32/27,164.28 = 13,693/x
  3. Step 3: Cross multiply
    19,664.32x = 27,164.28 × 13,693
  4. Step 4: Simplify right side
    19,664.32x = 371,960,486.04
  5. Step 5: Solve for x
    x = 371,960,486.04/19,664.32
  6. Step 6: Final answer
    x = 18,915.50

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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.