Home / 15,535.26-21,438.90-8,461.69

Finding the Fourth Proportional to 15,535.26, 21,438.90 and 8,461.69

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Solution

The fourth proportional to 15,535.26, 21,438.90 and 8,461.69 is: 11,677.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.26 : 21,438.90 = 8,461.69 : x
  2. Step 2: Convert to fraction form
    15,535.26/21,438.90 = 8,461.69/x
  3. Step 3: Cross multiply
    15,535.26x = 21,438.90 × 8,461.69
  4. Step 4: Simplify right side
    15,535.26x = 181,409,272.14
  5. Step 5: Solve for x
    x = 181,409,272.14/15,535.26
  6. Step 6: Final answer
    x = 11,677.26

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Half scale
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Double scale
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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.