Home / 18,816.70-25,970.43-10,857.82

Finding the Fourth Proportional to 18,816.70, 25,970.43 and 10,857.82

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Solution

The fourth proportional to 18,816.70, 25,970.43 and 10,857.82 is: 14,985.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.70 : 25,970.43 = 10,857.82 : x
  2. Step 2: Convert to fraction form
    18,816.70/25,970.43 = 10,857.82/x
  3. Step 3: Cross multiply
    18,816.70x = 25,970.43 × 10,857.82
  4. Step 4: Simplify right side
    18,816.70x = 281,982,254.26
  5. Step 5: Solve for x
    x = 281,982,254.26/18,816.70
  6. Step 6: Final answer
    x = 14,985.74

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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.