Home / 15,236.28-21,026.21-8,430.21

Finding the Fourth Proportional to 15,236.28, 21,026.21 and 8,430.21

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Solution

The fourth proportional to 15,236.28, 21,026.21 and 8,430.21 is: 11,633.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,236.28 : 21,026.21 = 8,430.21 : x
  2. Step 2: Convert to fraction form
    15,236.28/21,026.21 = 8,430.21/x
  3. Step 3: Cross multiply
    15,236.28x = 21,026.21 × 8,430.21
  4. Step 4: Simplify right side
    15,236.28x = 177,255,323.65
  5. Step 5: Solve for x
    x = 177,255,323.65/15,236.28
  6. Step 6: Final answer
    x = 11,633.77

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Half scale
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Double scale
Find fourth proportional to 15,237.28, 21,027.59 and 8,431.21
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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.