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Finding the Fourth Proportional to 28,513, 39,348.84 and 15,937.72

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Solution

The fourth proportional to 28,513, 39,348.84 and 15,937.72 is: 21,994.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513 : 39,348.84 = 15,937.72 : x
  2. Step 2: Convert to fraction form
    28,513/39,348.84 = 15,937.72/x
  3. Step 3: Cross multiply
    28,513x = 39,348.84 × 15,937.72
  4. Step 4: Simplify right side
    28,513x = 627,130,794.24
  5. Step 5: Solve for x
    x = 627,130,794.24/28,513
  6. Step 6: Final answer
    x = 21,994.56

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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.