Home / 15,220.39-21,010.60-9,253.96

Finding the Fourth Proportional to 15,220.39, 21,010.60 and 9,253.96

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Solution

The fourth proportional to 15,220.39, 21,010.60 and 9,253.96 is: 12,774.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.39 : 21,010.60 = 9,253.96 : x
  2. Step 2: Convert to fraction form
    15,220.39/21,010.60 = 9,253.96/x
  3. Step 3: Cross multiply
    15,220.39x = 21,010.60 × 9,253.96
  4. Step 4: Simplify right side
    15,220.39x = 194,431,289.81
  5. Step 5: Solve for x
    x = 194,431,289.81/15,220.39
  6. Step 6: Final answer
    x = 12,774.40

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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.