Home / 18,315.53-25,280.42-10,764.30

Finding the Fourth Proportional to 18,315.53, 25,280.42 and 10,764.30

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Solution

The fourth proportional to 18,315.53, 25,280.42 and 10,764.30 is: 14,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.53 : 25,280.42 = 10,764.30 : x
  2. Step 2: Convert to fraction form
    18,315.53/25,280.42 = 10,764.30/x
  3. Step 3: Cross multiply
    18,315.53x = 25,280.42 × 10,764.30
  4. Step 4: Simplify right side
    18,315.53x = 272,125,984.33
  5. Step 5: Solve for x
    x = 272,125,984.33/18,315.53
  6. Step 6: Final answer
    x = 14,857.66

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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.