Home / 28,039.02-42,065.82-10,509

Finding the Fourth Proportional to 28,039.02, 42,065.82 and 10,509

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Solution

The fourth proportional to 28,039.02, 42,065.82 and 10,509 is: 15,766.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.02 : 42,065.82 = 10,509 : x
  2. Step 2: Convert to fraction form
    28,039.02/42,065.82 = 10,509/x
  3. Step 3: Cross multiply
    28,039.02x = 42,065.82 × 10,509
  4. Step 4: Simplify right side
    28,039.02x = 442,069,702.38
  5. Step 5: Solve for x
    x = 442,069,702.38/28,039.02
  6. Step 6: Final answer
    x = 15,766.23

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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.