Home / 15,383.17-21,230.81-8,670.25

Finding the Fourth Proportional to 15,383.17, 21,230.81 and 8,670.25

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Solution

The fourth proportional to 15,383.17, 21,230.81 and 8,670.25 is: 11,966.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.17 : 21,230.81 = 8,670.25 : x
  2. Step 2: Convert to fraction form
    15,383.17/21,230.81 = 8,670.25/x
  3. Step 3: Cross multiply
    15,383.17x = 21,230.81 × 8,670.25
  4. Step 4: Simplify right side
    15,383.17x = 184,076,430.40
  5. Step 5: Solve for x
    x = 184,076,430.40/15,383.17
  6. Step 6: Final answer
    x = 11,966.09

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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.