Home / 18,315.10-27,406.95-15,858.34

Finding the Fourth Proportional to 18,315.10, 27,406.95 and 15,858.34

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Solution

The fourth proportional to 18,315.10, 27,406.95 and 15,858.34 is: 23,730.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.10 : 27,406.95 = 15,858.34 : x
  2. Step 2: Convert to fraction form
    18,315.10/27,406.95 = 15,858.34/x
  3. Step 3: Cross multiply
    18,315.10x = 27,406.95 × 15,858.34
  4. Step 4: Simplify right side
    18,315.10x = 434,628,731.46
  5. Step 5: Solve for x
    x = 434,628,731.46/18,315.10
  6. Step 6: Final answer
    x = 23,730.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.