Home / 15,457.23-21,331.07-8,383.63

Finding the Fourth Proportional to 15,457.23, 21,331.07 and 8,383.63

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Solution

The fourth proportional to 15,457.23, 21,331.07 and 8,383.63 is: 11,569.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.23 : 21,331.07 = 8,383.63 : x
  2. Step 2: Convert to fraction form
    15,457.23/21,331.07 = 8,383.63/x
  3. Step 3: Cross multiply
    15,457.23x = 21,331.07 × 8,383.63
  4. Step 4: Simplify right side
    15,457.23x = 178,831,798.38
  5. Step 5: Solve for x
    x = 178,831,798.38/15,457.23
  6. Step 6: Final answer
    x = 11,569.46

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Half scale
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Double scale
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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.