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Finding the Fourth Proportional to 18,587.48, 27,886.68 and 7,488.45

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Solution

The fourth proportional to 18,587.48, 27,886.68 and 7,488.45 is: 11,234.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.48 : 27,886.68 = 7,488.45 : x
  2. Step 2: Convert to fraction form
    18,587.48/27,886.68 = 7,488.45/x
  3. Step 3: Cross multiply
    18,587.48x = 27,886.68 × 7,488.45
  4. Step 4: Simplify right side
    18,587.48x = 208,828,008.85
  5. Step 5: Solve for x
    x = 208,828,008.85/18,587.48
  6. Step 6: Final answer
    x = 11,234.88

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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.