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Finding the Fourth Proportional to 18,646.30, 27,970.53 and 7,552.72

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Solution

The fourth proportional to 18,646.30, 27,970.53 and 7,552.72 is: 11,329.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.30 : 27,970.53 = 7,552.72 : x
  2. Step 2: Convert to fraction form
    18,646.30/27,970.53 = 7,552.72/x
  3. Step 3: Cross multiply
    18,646.30x = 27,970.53 × 7,552.72
  4. Step 4: Simplify right side
    18,646.30x = 211,253,581.34
  5. Step 5: Solve for x
    x = 211,253,581.34/18,646.30
  6. Step 6: Final answer
    x = 11,329.52

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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.