Home / 15,698.38-21,663.68-8,624.65

Finding the Fourth Proportional to 15,698.38, 21,663.68 and 8,624.65

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Solution

The fourth proportional to 15,698.38, 21,663.68 and 8,624.65 is: 11,901.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,698.38 : 21,663.68 = 8,624.65 : x
  2. Step 2: Convert to fraction form
    15,698.38/21,663.68 = 8,624.65/x
  3. Step 3: Cross multiply
    15,698.38x = 21,663.68 × 8,624.65
  4. Step 4: Simplify right side
    15,698.38x = 186,841,657.71
  5. Step 5: Solve for x
    x = 186,841,657.71/15,698.38
  6. Step 6: Final answer
    x = 11,901.97

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Half scale
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Double scale
Find fourth proportional to 15,699.38, 21,665.06 and 8,625.65
Similar ratio
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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.