Home / 15,227.89-21,020.96-9,261.47

Finding the Fourth Proportional to 15,227.89, 21,020.96 and 9,261.47

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Solution

The fourth proportional to 15,227.89, 21,020.96 and 9,261.47 is: 12,784.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.89 : 21,020.96 = 9,261.47 : x
  2. Step 2: Convert to fraction form
    15,227.89/21,020.96 = 9,261.47/x
  3. Step 3: Cross multiply
    15,227.89x = 21,020.96 × 9,261.47
  4. Step 4: Simplify right side
    15,227.89x = 194,685,066.12
  5. Step 5: Solve for x
    x = 194,685,066.12/15,227.89
  6. Step 6: Final answer
    x = 12,784.77

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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.