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Finding the Fourth Proportional to 28,509.53, 42,752.06 and 9,791.45

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Solution

The fourth proportional to 28,509.53, 42,752.06 and 9,791.45 is: 14,682.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.53 : 42,752.06 = 9,791.45 : x
  2. Step 2: Convert to fraction form
    28,509.53/42,752.06 = 9,791.45/x
  3. Step 3: Cross multiply
    28,509.53x = 42,752.06 × 9,791.45
  4. Step 4: Simplify right side
    28,509.53x = 418,604,395.17
  5. Step 5: Solve for x
    x = 418,604,395.17/28,509.53
  6. Step 6: Final answer
    x = 14,682.97

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1.5x scale

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.