Home / 15,383.52-21,228.48-8,670.72

Finding the Fourth Proportional to 15,383.52, 21,228.48 and 8,670.72

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Solution

The fourth proportional to 15,383.52, 21,228.48 and 8,670.72 is: 11,965.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.52 : 21,228.48 = 8,670.72 : x
  2. Step 2: Convert to fraction form
    15,383.52/21,228.48 = 8,670.72/x
  3. Step 3: Cross multiply
    15,383.52x = 21,228.48 × 8,670.72
  4. Step 4: Simplify right side
    15,383.52x = 184,066,206.11
  5. Step 5: Solve for x
    x = 184,066,206.11/15,383.52
  6. Step 6: Final answer
    x = 11,965.16

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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.