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Finding the Fourth Proportional to 18,995.78, 28,462.54 and 6,509.08

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Solution

The fourth proportional to 18,995.78, 28,462.54 and 6,509.08 is: 9,752.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.78 : 28,462.54 = 6,509.08 : x
  2. Step 2: Convert to fraction form
    18,995.78/28,462.54 = 6,509.08/x
  3. Step 3: Cross multiply
    18,995.78x = 28,462.54 × 6,509.08
  4. Step 4: Simplify right side
    18,995.78x = 185,264,821.27
  5. Step 5: Solve for x
    x = 185,264,821.27/18,995.78
  6. Step 6: Final answer
    x = 9,752.94

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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.