Home / 15,598.78-21,513.93-11,783.15

Finding the Fourth Proportional to 15,598.78, 21,513.93 and 11,783.15

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Solution

The fourth proportional to 15,598.78, 21,513.93 and 11,783.15 is: 16,251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,598.78 : 21,513.93 = 11,783.15 : x
  2. Step 2: Convert to fraction form
    15,598.78/21,513.93 = 11,783.15/x
  3. Step 3: Cross multiply
    15,598.78x = 21,513.93 × 11,783.15
  4. Step 4: Simplify right side
    15,598.78x = 253,501,765.83
  5. Step 5: Solve for x
    x = 253,501,765.83/15,598.78
  6. Step 6: Final answer
    x = 16,251.39

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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.