Home / 28,660.02-42,939.16-11,983.29

Finding the Fourth Proportional to 28,660.02, 42,939.16 and 11,983.29

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Solution

The fourth proportional to 28,660.02, 42,939.16 and 11,983.29 is: 17,953.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.02 : 42,939.16 = 11,983.29 : x
  2. Step 2: Convert to fraction form
    28,660.02/42,939.16 = 11,983.29/x
  3. Step 3: Cross multiply
    28,660.02x = 42,939.16 × 11,983.29
  4. Step 4: Simplify right side
    28,660.02x = 514,552,406.64
  5. Step 5: Solve for x
    x = 514,552,406.64/28,660.02
  6. Step 6: Final answer
    x = 17,953.67

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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.