Home / 15,507.84-21,393.60-9,220.48

Finding the Fourth Proportional to 15,507.84, 21,393.60 and 9,220.48

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Solution

The fourth proportional to 15,507.84, 21,393.60 and 9,220.48 is: 12,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.84 : 21,393.60 = 9,220.48 : x
  2. Step 2: Convert to fraction form
    15,507.84/21,393.60 = 9,220.48/x
  3. Step 3: Cross multiply
    15,507.84x = 21,393.60 × 9,220.48
  4. Step 4: Simplify right side
    15,507.84x = 197,259,260.93
  5. Step 5: Solve for x
    x = 197,259,260.93/15,507.84
  6. Step 6: Final answer
    x = 12,719.97

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Double scale
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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.