Home / 18,878.67-28,298.57-10,111.23

Finding the Fourth Proportional to 18,878.67, 28,298.57 and 10,111.23

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Solution

The fourth proportional to 18,878.67, 28,298.57 and 10,111.23 is: 15,156.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.67 : 28,298.57 = 10,111.23 : x
  2. Step 2: Convert to fraction form
    18,878.67/28,298.57 = 10,111.23/x
  3. Step 3: Cross multiply
    18,878.67x = 28,298.57 × 10,111.23
  4. Step 4: Simplify right side
    18,878.67x = 286,133,299.38
  5. Step 5: Solve for x
    x = 286,133,299.38/18,878.67
  6. Step 6: Final answer
    x = 15,156.43

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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.