Home / 28,519-39,356.28-15,946.72

Finding the Fourth Proportional to 28,519, 39,356.28 and 15,946.72

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Solution

The fourth proportional to 28,519, 39,356.28 and 15,946.72 is: 22,006.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519 : 39,356.28 = 15,946.72 : x
  2. Step 2: Convert to fraction form
    28,519/39,356.28 = 15,946.72/x
  3. Step 3: Cross multiply
    28,519x = 39,356.28 × 15,946.72
  4. Step 4: Simplify right side
    28,519x = 627,603,577.40
  5. Step 5: Solve for x
    x = 627,603,577.40/28,519
  6. Step 6: Final answer
    x = 22,006.51

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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.