Home / 28,632.08-39,511.10-15,885.82

Finding the Fourth Proportional to 28,632.08, 39,511.10 and 15,885.82

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Solution

The fourth proportional to 28,632.08, 39,511.10 and 15,885.82 is: 21,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,632.08 : 39,511.10 = 15,885.82 : x
  2. Step 2: Convert to fraction form
    28,632.08/39,511.10 = 15,885.82/x
  3. Step 3: Cross multiply
    28,632.08x = 39,511.10 × 15,885.82
  4. Step 4: Simplify right side
    28,632.08x = 627,666,000.10
  5. Step 5: Solve for x
    x = 627,666,000.10/28,632.08
  6. Step 6: Final answer
    x = 21,921.78

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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.