Home / 18,639.61-25,717.56-12,967.99

Finding the Fourth Proportional to 18,639.61, 25,717.56 and 12,967.99

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Solution

The fourth proportional to 18,639.61, 25,717.56 and 12,967.99 is: 17,892.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.61 : 25,717.56 = 12,967.99 : x
  2. Step 2: Convert to fraction form
    18,639.61/25,717.56 = 12,967.99/x
  3. Step 3: Cross multiply
    18,639.61x = 25,717.56 × 12,967.99
  4. Step 4: Simplify right side
    18,639.61x = 333,505,060.90
  5. Step 5: Solve for x
    x = 333,505,060.90/18,639.61
  6. Step 6: Final answer
    x = 17,892.28

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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.